diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java
index ab9a269bb3c4..ca10d30125c6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (AgentsClient agentsClient = AgentsClient.create()) {
  *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Agent response = agentsClient.getAgent(name);
@@ -89,8 +92,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings agentsSettings =
  *     AgentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -101,8 +107,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings agentsSettings = AgentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * AgentsClient agentsClient = AgentsClient.create(agentsSettings);
  * }</pre>
@@ -111,8 +120,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings agentsSettings =
  *     AgentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -203,8 +215,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
    *   for (Agent element : agentsClient.listAgents(parent).iterateAll()) {
@@ -230,8 +245,11 @@ public final ListAgentsPagedResponse listAgents(LocationName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
    *   for (Agent element : agentsClient.listAgents(parent).iterateAll()) {
@@ -256,8 +274,11 @@ public final ListAgentsPagedResponse listAgents(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListAgentsRequest request =
    *       ListAgentsRequest.newBuilder()
@@ -285,8 +306,11 @@ public final ListAgentsPagedResponse listAgents(ListAgentsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListAgentsRequest request =
    *       ListAgentsRequest.newBuilder()
@@ -313,8 +337,11 @@ public final UnaryCallable<ListAgentsRequest, ListAgentsPagedResponse> listAgent
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListAgentsRequest request =
    *       ListAgentsRequest.newBuilder()
@@ -348,8 +375,11 @@ public final UnaryCallable<ListAgentsRequest, ListAgentsResponse> listAgentsCall
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Agent response = agentsClient.getAgent(name);
@@ -373,8 +403,11 @@ public final Agent getAgent(AgentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Agent response = agentsClient.getAgent(name);
@@ -397,8 +430,11 @@ public final Agent getAgent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentRequest request =
    *       GetAgentRequest.newBuilder()
@@ -422,8 +458,11 @@ public final Agent getAgent(GetAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentRequest request =
    *       GetAgentRequest.newBuilder()
@@ -449,8 +488,11 @@ public final UnaryCallable<GetAgentRequest, Agent> getAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
    *   Agent agent = Agent.newBuilder().build();
@@ -482,8 +524,11 @@ public final Agent createAgent(LocationName parent, Agent agent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
    *   Agent agent = Agent.newBuilder().build();
@@ -512,8 +557,11 @@ public final Agent createAgent(String parent, Agent agent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   CreateAgentRequest request =
    *       CreateAgentRequest.newBuilder()
@@ -541,8 +589,11 @@ public final Agent createAgent(CreateAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   CreateAgentRequest request =
    *       CreateAgentRequest.newBuilder()
@@ -569,8 +620,11 @@ public final UnaryCallable<CreateAgentRequest, Agent> createAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   Agent agent = Agent.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -599,8 +653,11 @@ public final Agent updateAgent(Agent agent, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   UpdateAgentRequest request =
    *       UpdateAgentRequest.newBuilder()
@@ -628,8 +685,11 @@ public final Agent updateAgent(UpdateAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   UpdateAgentRequest request =
    *       UpdateAgentRequest.newBuilder()
@@ -653,8 +713,11 @@ public final UnaryCallable<UpdateAgentRequest, Agent> updateAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   agentsClient.deleteAgent(name);
@@ -678,8 +741,11 @@ public final void deleteAgent(AgentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   agentsClient.deleteAgent(name);
@@ -702,8 +768,11 @@ public final void deleteAgent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   DeleteAgentRequest request =
    *       DeleteAgentRequest.newBuilder()
@@ -727,8 +796,11 @@ public final void deleteAgent(DeleteAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   DeleteAgentRequest request =
    *       DeleteAgentRequest.newBuilder()
@@ -759,8 +831,11 @@ public final UnaryCallable<DeleteAgentRequest, Empty> deleteAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ExportAgentRequest request =
    *       ExportAgentRequest.newBuilder()
@@ -797,8 +872,11 @@ public final OperationFuture<ExportAgentResponse, Struct> exportAgentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ExportAgentRequest request =
    *       ExportAgentRequest.newBuilder()
@@ -835,8 +913,11 @@ public final OperationFuture<ExportAgentResponse, Struct> exportAgentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ExportAgentRequest request =
    *       ExportAgentRequest.newBuilder()
@@ -878,8 +959,11 @@ public final UnaryCallable<ExportAgentRequest, Operation> exportAgentCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   RestoreAgentRequest request =
    *       RestoreAgentRequest.newBuilder()
@@ -918,8 +1002,11 @@ public final OperationFuture<Empty, Struct> restoreAgentAsync(RestoreAgentReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   RestoreAgentRequest request =
    *       RestoreAgentRequest.newBuilder()
@@ -959,8 +1046,11 @@ public final OperationFuture<Empty, Struct> restoreAgentAsync(RestoreAgentReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   RestoreAgentRequest request =
    *       RestoreAgentRequest.newBuilder()
@@ -985,8 +1075,11 @@ public final UnaryCallable<RestoreAgentRequest, Operation> restoreAgentCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ValidateAgentRequest request =
    *       ValidateAgentRequest.newBuilder()
@@ -1013,8 +1106,11 @@ public final AgentValidationResult validateAgent(ValidateAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ValidateAgentRequest request =
    *       ValidateAgentRequest.newBuilder()
@@ -1040,8 +1136,11 @@ public final UnaryCallable<ValidateAgentRequest, AgentValidationResult> validate
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   AgentValidationResultName name =
    *       AgentValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
@@ -1069,8 +1168,11 @@ public final AgentValidationResult getAgentValidationResult(AgentValidationResul
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String name = AgentValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   AgentValidationResult response = agentsClient.getAgentValidationResult(name);
@@ -1095,8 +1197,11 @@ public final AgentValidationResult getAgentValidationResult(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentValidationResultRequest request =
    *       GetAgentValidationResultRequest.newBuilder()
@@ -1124,8 +1229,11 @@ public final AgentValidationResult getAgentValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentValidationResultRequest request =
    *       GetAgentValidationResultRequest.newBuilder()
@@ -1152,8 +1260,11 @@ public final AgentValidationResult getAgentValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1182,8 +1293,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1212,8 +1326,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1248,8 +1365,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = agentsClient.getLocation(request);
@@ -1270,8 +1390,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = agentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java
index 9cfa79e4d270..7f24ea4fb3f6 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/AgentsSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of getAgent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings.Builder agentsSettingsBuilder = AgentsSettings.newBuilder();
  * agentsSettingsBuilder
  *     .getAgentSettings()
  *     .setRetrySettings(
- *         agentsSettingsBuilder
- *             .getAgentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         agentsSettingsBuilder.getAgentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * AgentsSettings agentsSettings = agentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java
index 4d0dece3bed6..a270ba6c7a34 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsClient.java
@@ -44,8 +44,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
  *   ChangelogName name = ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]");
  *   Changelog response = changelogsClient.getChangelog(name);
@@ -81,8 +84,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings changelogsSettings =
  *     ChangelogsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -93,8 +99,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings changelogsSettings =
  *     ChangelogsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * ChangelogsClient changelogsClient = ChangelogsClient.create(changelogsSettings);
@@ -104,8 +113,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings changelogsSettings =
  *     ChangelogsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -171,8 +183,11 @@ public ChangelogsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Changelog element : changelogsClient.listChangelogs(parent).iterateAll()) {
@@ -200,8 +215,11 @@ public final ListChangelogsPagedResponse listChangelogs(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Changelog element : changelogsClient.listChangelogs(parent).iterateAll()) {
@@ -226,8 +244,11 @@ public final ListChangelogsPagedResponse listChangelogs(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListChangelogsRequest request =
    *       ListChangelogsRequest.newBuilder()
@@ -256,8 +277,11 @@ public final ListChangelogsPagedResponse listChangelogs(ListChangelogsRequest re
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListChangelogsRequest request =
    *       ListChangelogsRequest.newBuilder()
@@ -287,8 +311,11 @@ public final ListChangelogsPagedResponse listChangelogs(ListChangelogsRequest re
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListChangelogsRequest request =
    *       ListChangelogsRequest.newBuilder()
@@ -324,8 +351,11 @@ public final ListChangelogsPagedResponse listChangelogs(ListChangelogsRequest re
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ChangelogName name = ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]");
    *   Changelog response = changelogsClient.getChangelog(name);
@@ -350,8 +380,11 @@ public final Changelog getChangelog(ChangelogName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   String name =
    *       ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]").toString();
@@ -376,8 +409,11 @@ public final Changelog getChangelog(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetChangelogRequest request =
    *       GetChangelogRequest.newBuilder()
@@ -402,8 +438,11 @@ public final Changelog getChangelog(GetChangelogRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetChangelogRequest request =
    *       GetChangelogRequest.newBuilder()
@@ -427,8 +466,11 @@ public final UnaryCallable<GetChangelogRequest, Changelog> getChangelogCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -457,8 +499,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -488,8 +533,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -524,8 +572,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = changelogsClient.getLocation(request);
@@ -546,8 +597,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = changelogsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java
index 88e9aaec44a0..960d6f8adf1a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ChangelogsSettings.java
@@ -58,16 +58,16 @@
  * <p>For example, to set the total timeout of getChangelog to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings.Builder changelogsSettingsBuilder = ChangelogsSettings.newBuilder();
  * changelogsSettingsBuilder
  *     .getChangelogSettings()
  *     .setRetrySettings(
- *         changelogsSettingsBuilder
- *             .getChangelogSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         changelogsSettingsBuilder.getChangelogSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ChangelogsSettings changelogsSettings = changelogsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java
index c7e8c38690aa..091e2b45e56a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsClient.java
@@ -45,8 +45,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
  *   DeploymentName name =
  *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]");
@@ -83,8 +86,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings deploymentsSettings =
  *     DeploymentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -95,8 +101,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings deploymentsSettings =
  *     DeploymentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * DeploymentsClient deploymentsClient = DeploymentsClient.create(deploymentsSettings);
@@ -106,8 +115,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings deploymentsSettings =
  *     DeploymentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -175,8 +187,11 @@ public DeploymentsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -207,8 +222,11 @@ public final ListDeploymentsPagedResponse listDeployments(EnvironmentName parent
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -236,8 +254,11 @@ public final ListDeploymentsPagedResponse listDeployments(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListDeploymentsRequest request =
    *       ListDeploymentsRequest.newBuilder()
@@ -268,8 +289,11 @@ public final ListDeploymentsPagedResponse listDeployments(ListDeploymentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListDeploymentsRequest request =
    *       ListDeploymentsRequest.newBuilder()
@@ -301,8 +325,11 @@ public final ListDeploymentsPagedResponse listDeployments(ListDeploymentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListDeploymentsRequest request =
    *       ListDeploymentsRequest.newBuilder()
@@ -340,8 +367,11 @@ public final ListDeploymentsPagedResponse listDeployments(ListDeploymentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   DeploymentName name =
    *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]");
@@ -367,8 +397,11 @@ public final Deployment getDeployment(DeploymentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   String name =
    *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]")
@@ -394,8 +427,11 @@ public final Deployment getDeployment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetDeploymentRequest request =
    *       GetDeploymentRequest.newBuilder()
@@ -422,8 +458,11 @@ public final Deployment getDeployment(GetDeploymentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetDeploymentRequest request =
    *       GetDeploymentRequest.newBuilder()
@@ -449,8 +488,11 @@ public final UnaryCallable<GetDeploymentRequest, Deployment> getDeploymentCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -479,8 +521,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -510,8 +555,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -546,8 +594,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = deploymentsClient.getLocation(request);
@@ -568,8 +619,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = deploymentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java
index ba3fba1ebb66..601c3f157c7a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/DeploymentsSettings.java
@@ -58,16 +58,16 @@
  * <p>For example, to set the total timeout of getDeployment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings.Builder deploymentsSettingsBuilder = DeploymentsSettings.newBuilder();
  * deploymentsSettingsBuilder
  *     .getDeploymentSettings()
  *     .setRetrySettings(
- *         deploymentsSettingsBuilder
- *             .getDeploymentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         deploymentsSettingsBuilder.getDeploymentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * DeploymentsSettings deploymentsSettings = deploymentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java
index 6adf5102bdce..b7f36147069f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
  *   EntityTypeName name =
  *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -85,8 +88,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings entityTypesSettings =
  *     EntityTypesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -97,8 +103,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings entityTypesSettings =
  *     EntityTypesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * EntityTypesClient entityTypesClient = EntityTypesClient.create(entityTypesSettings);
@@ -108,8 +117,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings entityTypesSettings =
  *     EntityTypesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -176,8 +188,11 @@ public EntityTypesStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (EntityType element : entityTypesClient.listEntityTypes(parent).iterateAll()) {
@@ -205,8 +220,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (EntityType element : entityTypesClient.listEntityTypes(parent).iterateAll()) {
@@ -231,8 +249,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListEntityTypesRequest request =
    *       ListEntityTypesRequest.newBuilder()
@@ -261,8 +282,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(ListEntityTypesRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListEntityTypesRequest request =
    *       ListEntityTypesRequest.newBuilder()
@@ -292,8 +316,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(ListEntityTypesRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListEntityTypesRequest request =
    *       ListEntityTypesRequest.newBuilder()
@@ -330,8 +357,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(ListEntityTypesRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   EntityTypeName name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -357,8 +387,11 @@ public final EntityType getEntityType(EntityTypeName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]").toString();
@@ -383,8 +416,11 @@ public final EntityType getEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetEntityTypeRequest request =
    *       GetEntityTypeRequest.newBuilder()
@@ -411,8 +447,11 @@ public final EntityType getEntityType(GetEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetEntityTypeRequest request =
    *       GetEntityTypeRequest.newBuilder()
@@ -441,8 +480,11 @@ public final UnaryCallable<GetEntityTypeRequest, EntityType> getEntityTypeCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   EntityType entityType = EntityType.newBuilder().build();
@@ -474,8 +516,11 @@ public final EntityType createEntityType(AgentName parent, EntityType entityType
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   EntityType entityType = EntityType.newBuilder().build();
@@ -504,8 +549,11 @@ public final EntityType createEntityType(String parent, EntityType entityType) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   CreateEntityTypeRequest request =
    *       CreateEntityTypeRequest.newBuilder()
@@ -534,8 +582,11 @@ public final EntityType createEntityType(CreateEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   CreateEntityTypeRequest request =
    *       CreateEntityTypeRequest.newBuilder()
@@ -564,8 +615,11 @@ public final UnaryCallable<CreateEntityTypeRequest, EntityType> createEntityType
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   EntityType entityType = EntityType.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -596,8 +650,11 @@ public final EntityType updateEntityType(EntityType entityType, FieldMask update
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   UpdateEntityTypeRequest request =
    *       UpdateEntityTypeRequest.newBuilder()
@@ -626,8 +683,11 @@ public final EntityType updateEntityType(UpdateEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   UpdateEntityTypeRequest request =
    *       UpdateEntityTypeRequest.newBuilder()
@@ -656,8 +716,11 @@ public final UnaryCallable<UpdateEntityTypeRequest, EntityType> updateEntityType
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   EntityTypeName name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -686,8 +749,11 @@ public final void deleteEntityType(EntityTypeName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]").toString();
@@ -715,8 +781,11 @@ public final void deleteEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   DeleteEntityTypeRequest request =
    *       DeleteEntityTypeRequest.newBuilder()
@@ -746,8 +815,11 @@ public final void deleteEntityType(DeleteEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   DeleteEntityTypeRequest request =
    *       DeleteEntityTypeRequest.newBuilder()
@@ -773,8 +845,11 @@ public final UnaryCallable<DeleteEntityTypeRequest, Empty> deleteEntityTypeCalla
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -803,8 +878,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -834,8 +912,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -870,8 +951,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = entityTypesClient.getLocation(request);
@@ -892,8 +976,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = entityTypesClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java
index 597fbd09ae2a..235246032772 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EntityTypesSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings.Builder entityTypesSettingsBuilder = EntityTypesSettings.newBuilder();
  * entityTypesSettingsBuilder
  *     .getEntityTypeSettings()
  *     .setRetrySettings(
- *         entityTypesSettingsBuilder
- *             .getEntityTypeSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         entityTypesSettingsBuilder.getEntityTypeSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EntityTypesSettings entityTypesSettings = entityTypesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java
index 3945b5b357bd..b8900c223f53 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsClient.java
@@ -53,8 +53,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
  *   EnvironmentName name =
  *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -91,8 +94,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings environmentsSettings =
  *     EnvironmentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -103,8 +109,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings environmentsSettings =
  *     EnvironmentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * EnvironmentsClient environmentsClient = EnvironmentsClient.create(environmentsSettings);
@@ -114,8 +123,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings environmentsSettings =
  *     EnvironmentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -208,8 +220,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Environment element : environmentsClient.listEnvironments(parent).iterateAll()) {
@@ -239,8 +254,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Environment element : environmentsClient.listEnvironments(parent).iterateAll()) {
@@ -268,8 +286,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListEnvironmentsRequest request =
    *       ListEnvironmentsRequest.newBuilder()
@@ -298,8 +319,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(ListEnvironmentsRequ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListEnvironmentsRequest request =
    *       ListEnvironmentsRequest.newBuilder()
@@ -329,8 +353,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(ListEnvironmentsRequ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListEnvironmentsRequest request =
    *       ListEnvironmentsRequest.newBuilder()
@@ -366,8 +393,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(ListEnvironmentsRequ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -393,8 +423,11 @@ public final Environment getEnvironment(EnvironmentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -419,8 +452,11 @@ public final Environment getEnvironment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetEnvironmentRequest request =
    *       GetEnvironmentRequest.newBuilder()
@@ -446,8 +482,11 @@ public final Environment getEnvironment(GetEnvironmentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetEnvironmentRequest request =
    *       GetEnvironmentRequest.newBuilder()
@@ -482,8 +521,11 @@ public final UnaryCallable<GetEnvironmentRequest, Environment> getEnvironmentCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Environment environment = Environment.newBuilder().build();
@@ -523,8 +565,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Environment environment = Environment.newBuilder().build();
@@ -561,8 +606,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   CreateEnvironmentRequest request =
    *       CreateEnvironmentRequest.newBuilder()
@@ -597,8 +645,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   CreateEnvironmentRequest request =
    *       CreateEnvironmentRequest.newBuilder()
@@ -633,8 +684,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   CreateEnvironmentRequest request =
    *       CreateEnvironmentRequest.newBuilder()
@@ -667,8 +721,11 @@ public final UnaryCallable<CreateEnvironmentRequest, Operation> createEnvironmen
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   Environment environment = Environment.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -706,8 +763,11 @@ public final OperationFuture<Environment, Struct> updateEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   UpdateEnvironmentRequest request =
    *       UpdateEnvironmentRequest.newBuilder()
@@ -741,8 +801,11 @@ public final OperationFuture<Environment, Struct> updateEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   UpdateEnvironmentRequest request =
    *       UpdateEnvironmentRequest.newBuilder()
@@ -776,8 +839,11 @@ public final OperationFuture<Environment, Struct> updateEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   UpdateEnvironmentRequest request =
    *       UpdateEnvironmentRequest.newBuilder()
@@ -802,8 +868,11 @@ public final UnaryCallable<UpdateEnvironmentRequest, Operation> updateEnvironmen
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -831,8 +900,11 @@ public final void deleteEnvironment(EnvironmentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -857,8 +929,11 @@ public final void deleteEnvironment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeleteEnvironmentRequest request =
    *       DeleteEnvironmentRequest.newBuilder()
@@ -884,8 +959,11 @@ public final void deleteEnvironment(DeleteEnvironmentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeleteEnvironmentRequest request =
    *       DeleteEnvironmentRequest.newBuilder()
@@ -910,8 +988,11 @@ public final UnaryCallable<DeleteEnvironmentRequest, Empty> deleteEnvironmentCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -942,8 +1023,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -971,8 +1055,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(Stri
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   LookupEnvironmentHistoryRequest request =
    *       LookupEnvironmentHistoryRequest.newBuilder()
@@ -1004,8 +1091,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   LookupEnvironmentHistoryRequest request =
    *       LookupEnvironmentHistoryRequest.newBuilder()
@@ -1036,8 +1126,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   LookupEnvironmentHistoryRequest request =
    *       LookupEnvironmentHistoryRequest.newBuilder()
@@ -1085,8 +1178,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   RunContinuousTestRequest request =
    *       RunContinuousTestRequest.newBuilder()
@@ -1123,8 +1219,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   RunContinuousTestRequest request =
    *       RunContinuousTestRequest.newBuilder()
@@ -1162,8 +1261,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   RunContinuousTestRequest request =
    *       RunContinuousTestRequest.newBuilder()
@@ -1189,8 +1291,11 @@ public final UnaryCallable<RunContinuousTestRequest, Operation> runContinuousTes
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -1222,8 +1327,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -1252,8 +1360,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(St
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListContinuousTestResultsRequest request =
    *       ListContinuousTestResultsRequest.newBuilder()
@@ -1285,8 +1396,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListContinuousTestResultsRequest request =
    *       ListContinuousTestResultsRequest.newBuilder()
@@ -1318,8 +1432,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListContinuousTestResultsRequest request =
    *       ListContinuousTestResultsRequest.newBuilder()
@@ -1364,8 +1481,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeployFlowRequest request =
    *       DeployFlowRequest.newBuilder()
@@ -1402,8 +1522,11 @@ public final OperationFuture<DeployFlowResponse, DeployFlowMetadata> deployFlowA
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeployFlowRequest request =
    *       DeployFlowRequest.newBuilder()
@@ -1440,8 +1563,11 @@ public final OperationFuture<DeployFlowResponse, DeployFlowMetadata> deployFlowA
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeployFlowRequest request =
    *       DeployFlowRequest.newBuilder()
@@ -1469,8 +1595,11 @@ public final UnaryCallable<DeployFlowRequest, Operation> deployFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1499,8 +1628,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1530,8 +1662,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1566,8 +1701,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = environmentsClient.getLocation(request);
@@ -1588,8 +1726,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = environmentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java
index 37e6cb3c2332..8dabaf1db344 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/EnvironmentsSettings.java
@@ -64,16 +64,16 @@
  * <p>For example, to set the total timeout of getEnvironment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings.Builder environmentsSettingsBuilder = EnvironmentsSettings.newBuilder();
  * environmentsSettingsBuilder
  *     .getEnvironmentSettings()
  *     .setRetrySettings(
- *         environmentsSettingsBuilder
- *             .getEnvironmentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         environmentsSettingsBuilder.getEnvironmentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EnvironmentsSettings environmentsSettings = environmentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java
index dd4858d29874..9d561870873d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
  *   ExperimentName name =
  *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -85,8 +88,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings experimentsSettings =
  *     ExperimentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -97,8 +103,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings experimentsSettings =
  *     ExperimentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * ExperimentsClient experimentsClient = ExperimentsClient.create(experimentsSettings);
@@ -108,8 +117,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings experimentsSettings =
  *     ExperimentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -177,8 +189,11 @@ public ExperimentsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -209,8 +224,11 @@ public final ListExperimentsPagedResponse listExperiments(EnvironmentName parent
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -238,8 +256,11 @@ public final ListExperimentsPagedResponse listExperiments(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListExperimentsRequest request =
    *       ListExperimentsRequest.newBuilder()
@@ -270,8 +291,11 @@ public final ListExperimentsPagedResponse listExperiments(ListExperimentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListExperimentsRequest request =
    *       ListExperimentsRequest.newBuilder()
@@ -303,8 +327,11 @@ public final ListExperimentsPagedResponse listExperiments(ListExperimentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListExperimentsRequest request =
    *       ListExperimentsRequest.newBuilder()
@@ -342,8 +369,11 @@ public final ListExperimentsPagedResponse listExperiments(ListExperimentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -369,8 +399,11 @@ public final Experiment getExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -396,8 +429,11 @@ public final Experiment getExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetExperimentRequest request =
    *       GetExperimentRequest.newBuilder()
@@ -424,8 +460,11 @@ public final Experiment getExperiment(GetExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetExperimentRequest request =
    *       GetExperimentRequest.newBuilder()
@@ -452,8 +491,11 @@ public final UnaryCallable<GetExperimentRequest, Experiment> getExperimentCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -486,8 +528,11 @@ public final Experiment createExperiment(EnvironmentName parent, Experiment expe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -517,8 +562,11 @@ public final Experiment createExperiment(String parent, Experiment experiment) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   CreateExperimentRequest request =
    *       CreateExperimentRequest.newBuilder()
@@ -546,8 +594,11 @@ public final Experiment createExperiment(CreateExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   CreateExperimentRequest request =
    *       CreateExperimentRequest.newBuilder()
@@ -574,8 +625,11 @@ public final UnaryCallable<CreateExperimentRequest, Experiment> createExperiment
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   Experiment experiment = Experiment.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -603,8 +657,11 @@ public final Experiment updateExperiment(Experiment experiment, FieldMask update
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   UpdateExperimentRequest request =
    *       UpdateExperimentRequest.newBuilder()
@@ -629,8 +686,11 @@ public final Experiment updateExperiment(UpdateExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   UpdateExperimentRequest request =
    *       UpdateExperimentRequest.newBuilder()
@@ -655,8 +715,11 @@ public final UnaryCallable<UpdateExperimentRequest, Experiment> updateExperiment
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -683,8 +746,11 @@ public final void deleteExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -711,8 +777,11 @@ public final void deleteExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   DeleteExperimentRequest request =
    *       DeleteExperimentRequest.newBuilder()
@@ -739,8 +808,11 @@ public final void deleteExperiment(DeleteExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   DeleteExperimentRequest request =
    *       DeleteExperimentRequest.newBuilder()
@@ -767,8 +839,11 @@ public final UnaryCallable<DeleteExperimentRequest, Empty> deleteExperimentCalla
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -795,8 +870,11 @@ public final Experiment startExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -823,8 +901,11 @@ public final Experiment startExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StartExperimentRequest request =
    *       StartExperimentRequest.newBuilder()
@@ -852,8 +933,11 @@ public final Experiment startExperiment(StartExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StartExperimentRequest request =
    *       StartExperimentRequest.newBuilder()
@@ -881,8 +965,11 @@ public final UnaryCallable<StartExperimentRequest, Experiment> startExperimentCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -909,8 +996,11 @@ public final Experiment stopExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -937,8 +1027,11 @@ public final Experiment stopExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StopExperimentRequest request =
    *       StopExperimentRequest.newBuilder()
@@ -966,8 +1059,11 @@ public final Experiment stopExperiment(StopExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StopExperimentRequest request =
    *       StopExperimentRequest.newBuilder()
@@ -993,8 +1089,11 @@ public final UnaryCallable<StopExperimentRequest, Experiment> stopExperimentCall
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1023,8 +1122,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1054,8 +1156,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1090,8 +1195,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = experimentsClient.getLocation(request);
@@ -1112,8 +1220,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = experimentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java
index 9882251d4282..2dfb0fa4ff33 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/ExperimentsSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getExperiment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings.Builder experimentsSettingsBuilder = ExperimentsSettings.newBuilder();
  * experimentsSettingsBuilder
  *     .getExperimentSettings()
  *     .setRetrySettings(
- *         experimentsSettingsBuilder
- *             .getExperimentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         experimentsSettingsBuilder.getExperimentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ExperimentsSettings experimentsSettings = experimentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java
index 68eaeac95a0b..be4780c312b2 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (FlowsClient flowsClient = FlowsClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Flow flow = Flow.newBuilder().build();
@@ -90,8 +93,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings flowsSettings =
  *     FlowsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -102,8 +108,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings flowsSettings = FlowsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * FlowsClient flowsClient = FlowsClient.create(flowsSettings);
  * }</pre>
@@ -112,8 +121,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings flowsSettings =
  *     FlowsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -207,8 +219,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Flow flow = Flow.newBuilder().build();
@@ -240,8 +255,11 @@ public final Flow createFlow(AgentName parent, Flow flow) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Flow flow = Flow.newBuilder().build();
@@ -270,8 +288,11 @@ public final Flow createFlow(String parent, Flow flow) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   CreateFlowRequest request =
    *       CreateFlowRequest.newBuilder()
@@ -300,8 +321,11 @@ public final Flow createFlow(CreateFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   CreateFlowRequest request =
    *       CreateFlowRequest.newBuilder()
@@ -326,8 +350,11 @@ public final UnaryCallable<CreateFlowRequest, Flow> createFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowName name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   flowsClient.deleteFlow(name);
@@ -351,8 +378,11 @@ public final void deleteFlow(FlowName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   flowsClient.deleteFlow(name);
@@ -375,8 +405,11 @@ public final void deleteFlow(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   DeleteFlowRequest request =
    *       DeleteFlowRequest.newBuilder()
@@ -401,8 +434,11 @@ public final void deleteFlow(DeleteFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   DeleteFlowRequest request =
    *       DeleteFlowRequest.newBuilder()
@@ -426,8 +462,11 @@ public final UnaryCallable<DeleteFlowRequest, Empty> deleteFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Flow element : flowsClient.listFlows(parent).iterateAll()) {
@@ -453,8 +492,11 @@ public final ListFlowsPagedResponse listFlows(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Flow element : flowsClient.listFlows(parent).iterateAll()) {
@@ -479,8 +521,11 @@ public final ListFlowsPagedResponse listFlows(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListFlowsRequest request =
    *       ListFlowsRequest.newBuilder()
@@ -509,8 +554,11 @@ public final ListFlowsPagedResponse listFlows(ListFlowsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListFlowsRequest request =
    *       ListFlowsRequest.newBuilder()
@@ -538,8 +586,11 @@ public final UnaryCallable<ListFlowsRequest, ListFlowsPagedResponse> listFlowsPa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListFlowsRequest request =
    *       ListFlowsRequest.newBuilder()
@@ -574,8 +625,11 @@ public final UnaryCallable<ListFlowsRequest, ListFlowsResponse> listFlowsCallabl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowName name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   Flow response = flowsClient.getFlow(name);
@@ -599,8 +653,11 @@ public final Flow getFlow(FlowName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   Flow response = flowsClient.getFlow(name);
@@ -623,8 +680,11 @@ public final Flow getFlow(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowRequest request =
    *       GetFlowRequest.newBuilder()
@@ -649,8 +709,11 @@ public final Flow getFlow(GetFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowRequest request =
    *       GetFlowRequest.newBuilder()
@@ -677,8 +740,11 @@ public final UnaryCallable<GetFlowRequest, Flow> getFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   Flow flow = Flow.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -707,8 +773,11 @@ public final Flow updateFlow(Flow flow, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   UpdateFlowRequest request =
    *       UpdateFlowRequest.newBuilder()
@@ -737,8 +806,11 @@ public final Flow updateFlow(UpdateFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   UpdateFlowRequest request =
    *       UpdateFlowRequest.newBuilder()
@@ -775,8 +847,11 @@ public final UnaryCallable<UpdateFlowRequest, Flow> updateFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowName name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   flowsClient.trainFlowAsync(name).get();
@@ -812,8 +887,11 @@ public final OperationFuture<Empty, Struct> trainFlowAsync(FlowName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   flowsClient.trainFlowAsync(name).get();
@@ -848,8 +926,11 @@ public final OperationFuture<Empty, Struct> trainFlowAsync(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   TrainFlowRequest request =
    *       TrainFlowRequest.newBuilder()
@@ -885,8 +966,11 @@ public final OperationFuture<Empty, Struct> trainFlowAsync(TrainFlowRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   TrainFlowRequest request =
    *       TrainFlowRequest.newBuilder()
@@ -922,8 +1006,11 @@ public final OperationCallable<TrainFlowRequest, Empty, Struct> trainFlowOperati
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   TrainFlowRequest request =
    *       TrainFlowRequest.newBuilder()
@@ -947,8 +1034,11 @@ public final UnaryCallable<TrainFlowRequest, Operation> trainFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ValidateFlowRequest request =
    *       ValidateFlowRequest.newBuilder()
@@ -974,8 +1064,11 @@ public final FlowValidationResult validateFlow(ValidateFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ValidateFlowRequest request =
    *       ValidateFlowRequest.newBuilder()
@@ -1001,8 +1094,11 @@ public final UnaryCallable<ValidateFlowRequest, FlowValidationResult> validateFl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowValidationResultName name =
    *       FlowValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
@@ -1031,8 +1127,11 @@ public final FlowValidationResult getFlowValidationResult(FlowValidationResultNa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name =
    *       FlowValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
@@ -1059,8 +1158,11 @@ public final FlowValidationResult getFlowValidationResult(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowValidationResultRequest request =
    *       GetFlowValidationResultRequest.newBuilder()
@@ -1089,8 +1191,11 @@ public final FlowValidationResult getFlowValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowValidationResultRequest request =
    *       GetFlowValidationResultRequest.newBuilder()
@@ -1129,8 +1234,11 @@ public final FlowValidationResult getFlowValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ImportFlowRequest request =
    *       ImportFlowRequest.newBuilder()
@@ -1166,8 +1274,11 @@ public final OperationFuture<ImportFlowResponse, Struct> importFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ImportFlowRequest request =
    *       ImportFlowRequest.newBuilder()
@@ -1203,8 +1314,11 @@ public final OperationFuture<ImportFlowResponse, Struct> importFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ImportFlowRequest request =
    *       ImportFlowRequest.newBuilder()
@@ -1238,8 +1352,11 @@ public final UnaryCallable<ImportFlowRequest, Operation> importFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ExportFlowRequest request =
    *       ExportFlowRequest.newBuilder()
@@ -1277,8 +1394,11 @@ public final OperationFuture<ExportFlowResponse, Struct> exportFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ExportFlowRequest request =
    *       ExportFlowRequest.newBuilder()
@@ -1316,8 +1436,11 @@ public final OperationFuture<ExportFlowResponse, Struct> exportFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ExportFlowRequest request =
    *       ExportFlowRequest.newBuilder()
@@ -1342,8 +1465,11 @@ public final UnaryCallable<ExportFlowRequest, Operation> exportFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1372,8 +1498,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1402,8 +1531,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1438,8 +1570,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = flowsClient.getLocation(request);
@@ -1460,8 +1595,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = flowsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java
index 3a20eabff6dc..3c6ae38bc68e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowsSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of createFlow to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings.Builder flowsSettingsBuilder = FlowsSettings.newBuilder();
  * flowsSettingsBuilder
  *     .createFlowSettings()
  *     .setRetrySettings(
- *         flowsSettingsBuilder
- *             .createFlowSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         flowsSettingsBuilder.createFlowSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * FlowsSettings flowsSettings = flowsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java
index b3e1209e50ca..ad43032f1246 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsClient.java
@@ -46,8 +46,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (IntentsClient intentsClient = IntentsClient.create()) {
  *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
  *   Intent response = intentsClient.getIntent(name);
@@ -83,8 +86,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings intentsSettings =
  *     IntentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -95,8 +101,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings intentsSettings = IntentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * IntentsClient intentsClient = IntentsClient.create(intentsSettings);
  * }</pre>
@@ -105,8 +114,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings intentsSettings =
  *     IntentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -172,8 +184,11 @@ public IntentsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Intent element : intentsClient.listIntents(parent).iterateAll()) {
@@ -201,8 +216,11 @@ public final ListIntentsPagedResponse listIntents(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Intent element : intentsClient.listIntents(parent).iterateAll()) {
@@ -227,8 +245,11 @@ public final ListIntentsPagedResponse listIntents(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListIntentsRequest request =
    *       ListIntentsRequest.newBuilder()
@@ -258,8 +279,11 @@ public final ListIntentsPagedResponse listIntents(ListIntentsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListIntentsRequest request =
    *       ListIntentsRequest.newBuilder()
@@ -289,8 +313,11 @@ public final ListIntentsPagedResponse listIntents(ListIntentsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListIntentsRequest request =
    *       ListIntentsRequest.newBuilder()
@@ -326,8 +353,11 @@ public final UnaryCallable<ListIntentsRequest, ListIntentsResponse> listIntentsC
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
    *   Intent response = intentsClient.getIntent(name);
@@ -351,8 +381,11 @@ public final Intent getIntent(IntentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]").toString();
    *   Intent response = intentsClient.getIntent(name);
@@ -375,8 +408,11 @@ public final Intent getIntent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetIntentRequest request =
    *       GetIntentRequest.newBuilder()
@@ -401,8 +437,11 @@ public final Intent getIntent(GetIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetIntentRequest request =
    *       GetIntentRequest.newBuilder()
@@ -429,8 +468,11 @@ public final UnaryCallable<GetIntentRequest, Intent> getIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Intent intent = Intent.newBuilder().build();
@@ -462,8 +504,11 @@ public final Intent createIntent(AgentName parent, Intent intent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Intent intent = Intent.newBuilder().build();
@@ -492,8 +537,11 @@ public final Intent createIntent(String parent, Intent intent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   CreateIntentRequest request =
    *       CreateIntentRequest.newBuilder()
@@ -522,8 +570,11 @@ public final Intent createIntent(CreateIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   CreateIntentRequest request =
    *       CreateIntentRequest.newBuilder()
@@ -551,8 +602,11 @@ public final UnaryCallable<CreateIntentRequest, Intent> createIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   Intent intent = Intent.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -581,8 +635,11 @@ public final Intent updateIntent(Intent intent, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   UpdateIntentRequest request =
    *       UpdateIntentRequest.newBuilder()
@@ -611,8 +668,11 @@ public final Intent updateIntent(UpdateIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   UpdateIntentRequest request =
    *       UpdateIntentRequest.newBuilder()
@@ -640,8 +700,11 @@ public final UnaryCallable<UpdateIntentRequest, Intent> updateIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
    *   intentsClient.deleteIntent(name);
@@ -668,8 +731,11 @@ public final void deleteIntent(IntentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]").toString();
    *   intentsClient.deleteIntent(name);
@@ -695,8 +761,11 @@ public final void deleteIntent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   DeleteIntentRequest request =
    *       DeleteIntentRequest.newBuilder()
@@ -723,8 +792,11 @@ public final void deleteIntent(DeleteIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   DeleteIntentRequest request =
    *       DeleteIntentRequest.newBuilder()
@@ -747,8 +819,11 @@ public final UnaryCallable<DeleteIntentRequest, Empty> deleteIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -777,8 +852,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -807,8 +885,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -843,8 +924,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = intentsClient.getLocation(request);
@@ -865,8 +949,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = intentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java
index 6816a7ac49b6..8da808207676 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentsSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings.Builder intentsSettingsBuilder = IntentsSettings.newBuilder();
  * intentsSettingsBuilder
  *     .getIntentSettings()
  *     .setRetrySettings(
- *         intentsSettingsBuilder
- *             .getIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         intentsSettingsBuilder.getIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * IntentsSettings intentsSettings = intentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java
index 54188fdd8bab..d20c41730ec1 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesClient.java
@@ -46,8 +46,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (PagesClient pagesClient = PagesClient.create()) {
  *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
  *   Page response = pagesClient.getPage(name);
@@ -83,8 +86,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings pagesSettings =
  *     PagesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -95,8 +101,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings pagesSettings = PagesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * PagesClient pagesClient = PagesClient.create(pagesSettings);
  * }</pre>
@@ -105,8 +114,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings pagesSettings =
  *     PagesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -172,8 +184,11 @@ public PagesStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   for (Page element : pagesClient.listPages(parent).iterateAll()) {
@@ -199,8 +214,11 @@ public final ListPagesPagedResponse listPages(FlowName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   for (Page element : pagesClient.listPages(parent).iterateAll()) {
@@ -225,8 +243,11 @@ public final ListPagesPagedResponse listPages(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListPagesRequest request =
    *       ListPagesRequest.newBuilder()
@@ -255,8 +276,11 @@ public final ListPagesPagedResponse listPages(ListPagesRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListPagesRequest request =
    *       ListPagesRequest.newBuilder()
@@ -284,8 +308,11 @@ public final UnaryCallable<ListPagesRequest, ListPagesPagedResponse> listPagesPa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListPagesRequest request =
    *       ListPagesRequest.newBuilder()
@@ -320,8 +347,11 @@ public final UnaryCallable<ListPagesRequest, ListPagesResponse> listPagesCallabl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
    *   Page response = pagesClient.getPage(name);
@@ -346,8 +376,11 @@ public final Page getPage(PageName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String name =
    *       PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]").toString();
@@ -372,8 +405,11 @@ public final Page getPage(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetPageRequest request =
    *       GetPageRequest.newBuilder()
@@ -399,8 +435,11 @@ public final Page getPage(GetPageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetPageRequest request =
    *       GetPageRequest.newBuilder()
@@ -428,8 +467,11 @@ public final UnaryCallable<GetPageRequest, Page> getPageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   Page page = Page.newBuilder().build();
@@ -461,8 +503,11 @@ public final Page createPage(FlowName parent, Page page) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   Page page = Page.newBuilder().build();
@@ -491,8 +536,11 @@ public final Page createPage(String parent, Page page) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   CreatePageRequest request =
    *       CreatePageRequest.newBuilder()
@@ -521,8 +569,11 @@ public final Page createPage(CreatePageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   CreatePageRequest request =
    *       CreatePageRequest.newBuilder()
@@ -550,8 +601,11 @@ public final UnaryCallable<CreatePageRequest, Page> createPageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   Page page = Page.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -580,8 +634,11 @@ public final Page updatePage(Page page, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   UpdatePageRequest request =
    *       UpdatePageRequest.newBuilder()
@@ -610,8 +667,11 @@ public final Page updatePage(UpdatePageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   UpdatePageRequest request =
    *       UpdatePageRequest.newBuilder()
@@ -639,8 +699,11 @@ public final UnaryCallable<UpdatePageRequest, Page> updatePageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
    *   pagesClient.deletePage(name);
@@ -668,8 +731,11 @@ public final void deletePage(PageName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String name =
    *       PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]").toString();
@@ -697,8 +763,11 @@ public final void deletePage(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   DeletePageRequest request =
    *       DeletePageRequest.newBuilder()
@@ -727,8 +796,11 @@ public final void deletePage(DeletePageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   DeletePageRequest request =
    *       DeletePageRequest.newBuilder()
@@ -753,8 +825,11 @@ public final UnaryCallable<DeletePageRequest, Empty> deletePageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -783,8 +858,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -813,8 +891,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -849,8 +930,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = pagesClient.getLocation(request);
@@ -871,8 +955,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = pagesClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java
index ea45df93dc9e..39c1c9dde46a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/PagesSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getPage to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings.Builder pagesSettingsBuilder = PagesSettings.newBuilder();
  * pagesSettingsBuilder
  *     .getPageSettings()
  *     .setRetrySettings(
- *         pagesSettingsBuilder
- *             .getPageSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         pagesSettingsBuilder.getPageSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * PagesSettings pagesSettings = pagesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java
index d1c8bbe10382..50c20b571d0b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceClient.java
@@ -46,8 +46,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SecuritySettingsServiceClient securitySettingsServiceClient =
  *     SecuritySettingsServiceClient.create()) {
  *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -87,8 +90,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings securitySettingsServiceSettings =
  *     SecuritySettingsServiceSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -100,8 +106,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings securitySettingsServiceSettings =
  *     SecuritySettingsServiceSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SecuritySettingsServiceClient securitySettingsServiceClient =
@@ -112,8 +121,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings securitySettingsServiceSettings =
  *     SecuritySettingsServiceSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -183,8 +195,11 @@ public SecuritySettingsServiceStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -217,8 +232,11 @@ public final SecuritySettings createSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
@@ -251,8 +269,11 @@ public final SecuritySettings createSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   CreateSecuritySettingsRequest request =
@@ -278,8 +299,11 @@ public final SecuritySettings createSecuritySettings(CreateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   CreateSecuritySettingsRequest request =
@@ -307,8 +331,11 @@ public final SecuritySettings createSecuritySettings(CreateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   SecuritySettingsName name =
@@ -337,8 +364,11 @@ public final SecuritySettings getSecuritySettings(SecuritySettingsName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String name =
@@ -365,8 +395,11 @@ public final SecuritySettings getSecuritySettings(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetSecuritySettingsRequest request =
@@ -394,8 +427,11 @@ public final SecuritySettings getSecuritySettings(GetSecuritySettingsRequest req
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetSecuritySettingsRequest request =
@@ -423,8 +459,11 @@ public final SecuritySettings getSecuritySettings(GetSecuritySettingsRequest req
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   SecuritySettings securitySettings = SecuritySettings.newBuilder().build();
@@ -457,8 +496,11 @@ public final SecuritySettings updateSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   UpdateSecuritySettingsRequest request =
@@ -484,8 +526,11 @@ public final SecuritySettings updateSecuritySettings(UpdateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   UpdateSecuritySettingsRequest request =
@@ -512,8 +557,11 @@ public final SecuritySettings updateSecuritySettings(UpdateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -543,8 +591,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(LocationName
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
@@ -572,8 +623,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(String paren
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListSecuritySettingsRequest request =
@@ -604,8 +658,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListSecuritySettingsRequest request =
@@ -635,8 +692,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListSecuritySettingsRequest request =
@@ -673,8 +733,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   SecuritySettingsName name =
@@ -704,8 +767,11 @@ public final void deleteSecuritySettings(SecuritySettingsName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String name =
@@ -733,8 +799,11 @@ public final void deleteSecuritySettings(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   DeleteSecuritySettingsRequest request =
@@ -761,8 +830,11 @@ public final void deleteSecuritySettings(DeleteSecuritySettingsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   DeleteSecuritySettingsRequest request =
@@ -790,8 +862,11 @@ public final void deleteSecuritySettings(DeleteSecuritySettingsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListLocationsRequest request =
@@ -821,8 +896,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListLocationsRequest request =
@@ -853,8 +931,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListLocationsRequest request =
@@ -891,8 +972,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
@@ -914,8 +998,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java
index f4c0674dfa55..9541a7dba60b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SecuritySettingsServiceSettings.java
@@ -59,8 +59,11 @@
  * <p>For example, to set the total timeout of createSecuritySettings to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings.Builder securitySettingsServiceSettingsBuilder =
  *     SecuritySettingsServiceSettings.newBuilder();
  * securitySettingsServiceSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java
index 3f0bec72d648..2832e7d2d822 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
  *   SessionEntityTypeName name =
  *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -87,8 +90,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings sessionEntityTypesSettings =
  *     SessionEntityTypesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -100,8 +106,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings sessionEntityTypesSettings =
  *     SessionEntityTypesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SessionEntityTypesClient sessionEntityTypesClient =
@@ -112,8 +121,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings sessionEntityTypesSettings =
  *     SessionEntityTypesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -182,8 +194,11 @@ public SessionEntityTypesStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionName parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -217,8 +232,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(SessionN
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -251,8 +269,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(String p
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListSessionEntityTypesRequest request =
    *       ListSessionEntityTypesRequest.newBuilder()
@@ -285,8 +306,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListSessionEntityTypesRequest request =
    *       ListSessionEntityTypesRequest.newBuilder()
@@ -318,8 +342,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListSessionEntityTypesRequest request =
    *       ListSessionEntityTypesRequest.newBuilder()
@@ -358,8 +385,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionEntityTypeName name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -391,8 +421,11 @@ public final SessionEntityType getSessionEntityType(SessionEntityTypeName name)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -423,8 +456,11 @@ public final SessionEntityType getSessionEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetSessionEntityTypeRequest request =
    *       GetSessionEntityTypeRequest.newBuilder()
@@ -451,8 +487,11 @@ public final SessionEntityType getSessionEntityType(GetSessionEntityTypeRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetSessionEntityTypeRequest request =
    *       GetSessionEntityTypeRequest.newBuilder()
@@ -480,8 +519,11 @@ public final SessionEntityType getSessionEntityType(GetSessionEntityTypeRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionName parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -517,8 +559,11 @@ public final SessionEntityType createSessionEntityType(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -555,8 +600,11 @@ public final SessionEntityType createSessionEntityType(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   CreateSessionEntityTypeRequest request =
    *       CreateSessionEntityTypeRequest.newBuilder()
@@ -584,8 +632,11 @@ public final SessionEntityType createSessionEntityType(CreateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   CreateSessionEntityTypeRequest request =
    *       CreateSessionEntityTypeRequest.newBuilder()
@@ -614,8 +665,11 @@ public final SessionEntityType createSessionEntityType(CreateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionEntityType sessionEntityType = SessionEntityType.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -651,8 +705,11 @@ public final SessionEntityType updateSessionEntityType(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   UpdateSessionEntityTypeRequest request =
    *       UpdateSessionEntityTypeRequest.newBuilder()
@@ -677,8 +734,11 @@ public final SessionEntityType updateSessionEntityType(UpdateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   UpdateSessionEntityTypeRequest request =
    *       UpdateSessionEntityTypeRequest.newBuilder()
@@ -704,8 +764,11 @@ public final SessionEntityType updateSessionEntityType(UpdateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionEntityTypeName name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -738,8 +801,11 @@ public final void deleteSessionEntityType(SessionEntityTypeName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -771,8 +837,11 @@ public final void deleteSessionEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   DeleteSessionEntityTypeRequest request =
    *       DeleteSessionEntityTypeRequest.newBuilder()
@@ -799,8 +868,11 @@ public final void deleteSessionEntityType(DeleteSessionEntityTypeRequest request
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   DeleteSessionEntityTypeRequest request =
    *       DeleteSessionEntityTypeRequest.newBuilder()
@@ -828,8 +900,11 @@ public final void deleteSessionEntityType(DeleteSessionEntityTypeRequest request
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -858,8 +933,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -889,8 +967,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -926,8 +1007,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = sessionEntityTypesClient.getLocation(request);
@@ -948,8 +1032,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java
index 88424507a4c2..5b3707f42678 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionEntityTypesSettings.java
@@ -59,8 +59,11 @@
  * <p>For example, to set the total timeout of getSessionEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings.Builder sessionEntityTypesSettingsBuilder =
  *     SessionEntityTypesSettings.newBuilder();
  * sessionEntityTypesSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java
index db7c961d84ca..2328666a17e7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionsClient sessionsClient = SessionsClient.create()) {
  *   DetectIntentRequest request =
  *       DetectIntentRequest.newBuilder()
@@ -93,8 +96,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings sessionsSettings =
  *     SessionsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -105,8 +111,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings sessionsSettings =
  *     SessionsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SessionsClient sessionsClient = SessionsClient.create(sessionsSettings);
@@ -116,8 +125,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings sessionsSettings =
  *     SessionsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -188,8 +200,11 @@ public SessionsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   DetectIntentRequest request =
    *       DetectIntentRequest.newBuilder()
@@ -224,8 +239,11 @@ public final DetectIntentResponse detectIntent(DetectIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   DetectIntentRequest request =
    *       DetectIntentRequest.newBuilder()
@@ -260,8 +278,11 @@ public final UnaryCallable<DetectIntentRequest, DetectIntentResponse> detectInte
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   BidiStream<StreamingDetectIntentRequest, StreamingDetectIntentResponse> bidiStream =
    *       sessionsClient.streamingDetectIntentCallable().call();
@@ -295,8 +316,11 @@ public final UnaryCallable<DetectIntentRequest, DetectIntentResponse> detectInte
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   MatchIntentRequest request =
    *       MatchIntentRequest.newBuilder()
@@ -325,8 +349,11 @@ public final MatchIntentResponse matchIntent(MatchIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   MatchIntentRequest request =
    *       MatchIntentRequest.newBuilder()
@@ -359,8 +386,11 @@ public final UnaryCallable<MatchIntentRequest, MatchIntentResponse> matchIntentC
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   FulfillIntentRequest request =
    *       FulfillIntentRequest.newBuilder()
@@ -390,8 +420,11 @@ public final FulfillIntentResponse fulfillIntent(FulfillIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   FulfillIntentRequest request =
    *       FulfillIntentRequest.newBuilder()
@@ -417,8 +450,11 @@ public final UnaryCallable<FulfillIntentRequest, FulfillIntentResponse> fulfillI
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -447,8 +483,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -477,8 +516,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -513,8 +555,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = sessionsClient.getLocation(request);
@@ -535,8 +580,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = sessionsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java
index e4e1b4a2746d..61955b9c6625 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionsSettings.java
@@ -58,16 +58,16 @@
  * <p>For example, to set the total timeout of detectIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
  * sessionsSettingsBuilder
  *     .detectIntentSettings()
  *     .setRetrySettings(
- *         sessionsSettingsBuilder
- *             .detectIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         sessionsSettingsBuilder.detectIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java
index 5ec416f05c05..8c8ba7c87bd7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   testCasesClient.batchDeleteTestCases(parent);
@@ -89,8 +92,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings testCasesSettings =
  *     TestCasesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -101,8 +107,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings testCasesSettings =
  *     TestCasesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * TestCasesClient testCasesClient = TestCasesClient.create(testCasesSettings);
@@ -112,8 +121,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings testCasesSettings =
  *     TestCasesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -204,8 +216,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (TestCase element : testCasesClient.listTestCases(parent).iterateAll()) {
@@ -233,8 +248,11 @@ public final ListTestCasesPagedResponse listTestCases(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (TestCase element : testCasesClient.listTestCases(parent).iterateAll()) {
@@ -259,8 +277,11 @@ public final ListTestCasesPagedResponse listTestCases(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCasesRequest request =
    *       ListTestCasesRequest.newBuilder()
@@ -288,8 +309,11 @@ public final ListTestCasesPagedResponse listTestCases(ListTestCasesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCasesRequest request =
    *       ListTestCasesRequest.newBuilder()
@@ -317,8 +341,11 @@ public final ListTestCasesPagedResponse listTestCases(ListTestCasesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCasesRequest request =
    *       ListTestCasesRequest.newBuilder()
@@ -352,8 +379,11 @@ public final UnaryCallable<ListTestCasesRequest, ListTestCasesResponse> listTest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   testCasesClient.batchDeleteTestCases(parent);
@@ -379,8 +409,11 @@ public final void batchDeleteTestCases(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   testCasesClient.batchDeleteTestCases(parent);
@@ -404,8 +437,11 @@ public final void batchDeleteTestCases(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchDeleteTestCasesRequest request =
    *       BatchDeleteTestCasesRequest.newBuilder()
@@ -430,8 +466,11 @@ public final void batchDeleteTestCases(BatchDeleteTestCasesRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchDeleteTestCasesRequest request =
    *       BatchDeleteTestCasesRequest.newBuilder()
@@ -455,8 +494,11 @@ public final UnaryCallable<BatchDeleteTestCasesRequest, Empty> batchDeleteTestCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCaseName name = TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]");
    *   TestCase response = testCasesClient.getTestCase(name);
@@ -481,8 +523,11 @@ public final TestCase getTestCase(TestCaseName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String name = TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]").toString();
    *   TestCase response = testCasesClient.getTestCase(name);
@@ -506,8 +551,11 @@ public final TestCase getTestCase(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseRequest request =
    *       GetTestCaseRequest.newBuilder()
@@ -532,8 +580,11 @@ public final TestCase getTestCase(GetTestCaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseRequest request =
    *       GetTestCaseRequest.newBuilder()
@@ -557,8 +608,11 @@ public final UnaryCallable<GetTestCaseRequest, TestCase> getTestCaseCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   TestCase testCase = TestCase.newBuilder().build();
@@ -587,8 +641,11 @@ public final TestCase createTestCase(AgentName parent, TestCase testCase) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   TestCase testCase = TestCase.newBuilder().build();
@@ -614,8 +671,11 @@ public final TestCase createTestCase(String parent, TestCase testCase) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CreateTestCaseRequest request =
    *       CreateTestCaseRequest.newBuilder()
@@ -640,8 +700,11 @@ public final TestCase createTestCase(CreateTestCaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CreateTestCaseRequest request =
    *       CreateTestCaseRequest.newBuilder()
@@ -665,8 +728,11 @@ public final UnaryCallable<CreateTestCaseRequest, TestCase> createTestCaseCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCase testCase = TestCase.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -694,8 +760,11 @@ public final TestCase updateTestCase(TestCase testCase, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   UpdateTestCaseRequest request =
    *       UpdateTestCaseRequest.newBuilder()
@@ -720,8 +789,11 @@ public final TestCase updateTestCase(UpdateTestCaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   UpdateTestCaseRequest request =
    *       UpdateTestCaseRequest.newBuilder()
@@ -752,8 +824,11 @@ public final UnaryCallable<UpdateTestCaseRequest, TestCase> updateTestCaseCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   RunTestCaseRequest request =
    *       RunTestCaseRequest.newBuilder()
@@ -789,8 +864,11 @@ public final OperationFuture<RunTestCaseResponse, RunTestCaseMetadata> runTestCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   RunTestCaseRequest request =
    *       RunTestCaseRequest.newBuilder()
@@ -826,8 +904,11 @@ public final OperationFuture<RunTestCaseResponse, RunTestCaseMetadata> runTestCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   RunTestCaseRequest request =
    *       RunTestCaseRequest.newBuilder()
@@ -863,8 +944,11 @@ public final UnaryCallable<RunTestCaseRequest, Operation> runTestCaseCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchRunTestCasesRequest request =
    *       BatchRunTestCasesRequest.newBuilder()
@@ -902,8 +986,11 @@ public final UnaryCallable<RunTestCaseRequest, Operation> runTestCaseCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchRunTestCasesRequest request =
    *       BatchRunTestCasesRequest.newBuilder()
@@ -942,8 +1029,11 @@ public final UnaryCallable<RunTestCaseRequest, Operation> runTestCaseCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchRunTestCasesRequest request =
    *       BatchRunTestCasesRequest.newBuilder()
@@ -970,8 +1060,11 @@ public final UnaryCallable<BatchRunTestCasesRequest, Operation> batchRunTestCase
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CalculateCoverageRequest request =
    *       CalculateCoverageRequest.newBuilder()
@@ -995,8 +1088,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CalculateCoverageRequest request =
    *       CalculateCoverageRequest.newBuilder()
@@ -1031,8 +1127,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ImportTestCasesRequest request =
    *       ImportTestCasesRequest.newBuilder()
@@ -1067,8 +1166,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ImportTestCasesRequest request =
    *       ImportTestCasesRequest.newBuilder()
@@ -1104,8 +1206,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ImportTestCasesRequest request =
    *       ImportTestCasesRequest.newBuilder()
@@ -1137,8 +1242,11 @@ public final UnaryCallable<ImportTestCasesRequest, Operation> importTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ExportTestCasesRequest request =
    *       ExportTestCasesRequest.newBuilder()
@@ -1173,8 +1281,11 @@ public final UnaryCallable<ImportTestCasesRequest, Operation> importTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ExportTestCasesRequest request =
    *       ExportTestCasesRequest.newBuilder()
@@ -1210,8 +1321,11 @@ public final UnaryCallable<ImportTestCasesRequest, Operation> importTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ExportTestCasesRequest request =
    *       ExportTestCasesRequest.newBuilder()
@@ -1235,8 +1349,11 @@ public final UnaryCallable<ExportTestCasesRequest, Operation> exportTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCaseName parent = TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]");
    *   for (TestCaseResult element : testCasesClient.listTestCaseResults(parent).iterateAll()) {
@@ -1266,8 +1383,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(TestCaseName p
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent =
    *       TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]").toString();
@@ -1296,8 +1416,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(String parent)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCaseResultsRequest request =
    *       ListTestCaseResultsRequest.newBuilder()
@@ -1328,8 +1451,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCaseResultsRequest request =
    *       ListTestCaseResultsRequest.newBuilder()
@@ -1360,8 +1486,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCaseResultsRequest request =
    *       ListTestCaseResultsRequest.newBuilder()
@@ -1399,8 +1528,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCaseResultName name =
    *       TestCaseResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]", "[RESULT]");
@@ -1428,8 +1560,11 @@ public final TestCaseResult getTestCaseResult(TestCaseResultName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String name =
    *       TestCaseResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]", "[RESULT]")
@@ -1455,8 +1590,11 @@ public final TestCaseResult getTestCaseResult(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseResultRequest request =
    *       GetTestCaseResultRequest.newBuilder()
@@ -1483,8 +1621,11 @@ public final TestCaseResult getTestCaseResult(GetTestCaseResultRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseResultRequest request =
    *       GetTestCaseResultRequest.newBuilder()
@@ -1511,8 +1652,11 @@ public final UnaryCallable<GetTestCaseResultRequest, TestCaseResult> getTestCase
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1541,8 +1685,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1571,8 +1718,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1607,8 +1757,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = testCasesClient.getLocation(request);
@@ -1629,8 +1782,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = testCasesClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java
index 469ca98111fd..521eff7b1761 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TestCasesSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of batchDeleteTestCases to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings.Builder testCasesSettingsBuilder = TestCasesSettings.newBuilder();
  * testCasesSettingsBuilder
  *     .batchDeleteTestCasesSettings()
  *     .setRetrySettings(
- *         testCasesSettingsBuilder
- *             .batchDeleteTestCasesSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         testCasesSettingsBuilder.batchDeleteTestCasesSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * TestCasesSettings testCasesSettings = testCasesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java
index 758b5754fe9f..661290b10422 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
  *     TransitionRouteGroupsClient.create()) {
  *   TransitionRouteGroupName name =
@@ -88,8 +91,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings transitionRouteGroupsSettings =
  *     TransitionRouteGroupsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -101,8 +107,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings transitionRouteGroupsSettings =
  *     TransitionRouteGroupsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * TransitionRouteGroupsClient transitionRouteGroupsClient =
@@ -113,8 +122,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings transitionRouteGroupsSettings =
  *     TransitionRouteGroupsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -183,8 +195,11 @@ public TransitionRouteGroupsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
@@ -215,8 +230,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(Fl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
@@ -245,8 +263,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(St
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListTransitionRouteGroupsRequest request =
@@ -278,8 +299,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListTransitionRouteGroupsRequest request =
@@ -311,8 +335,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListTransitionRouteGroupsRequest request =
@@ -351,8 +378,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   TransitionRouteGroupName name =
@@ -384,8 +414,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(TransitionRouteGroupNa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String name =
@@ -416,8 +449,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetTransitionRouteGroupRequest request =
@@ -452,8 +488,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetTransitionRouteGroupRequest request =
@@ -491,8 +530,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
@@ -530,8 +572,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
@@ -569,8 +614,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   CreateTransitionRouteGroupRequest request =
@@ -603,8 +651,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   CreateTransitionRouteGroupRequest request =
@@ -636,8 +687,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   TransitionRouteGroup transitionRouteGroup = TransitionRouteGroup.newBuilder().build();
@@ -672,8 +726,11 @@ public final TransitionRouteGroup updateTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   UpdateTransitionRouteGroupRequest request =
@@ -706,8 +763,11 @@ public final TransitionRouteGroup updateTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   UpdateTransitionRouteGroupRequest request =
@@ -739,8 +799,11 @@ public final TransitionRouteGroup updateTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   TransitionRouteGroupName name =
@@ -775,8 +838,11 @@ public final void deleteTransitionRouteGroup(TransitionRouteGroupName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String name =
@@ -810,8 +876,11 @@ public final void deleteTransitionRouteGroup(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   DeleteTransitionRouteGroupRequest request =
@@ -848,8 +917,11 @@ public final void deleteTransitionRouteGroup(DeleteTransitionRouteGroupRequest r
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   DeleteTransitionRouteGroupRequest request =
@@ -883,8 +955,11 @@ public final void deleteTransitionRouteGroup(DeleteTransitionRouteGroupRequest r
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListLocationsRequest request =
@@ -914,8 +989,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListLocationsRequest request =
@@ -946,8 +1024,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListLocationsRequest request =
@@ -984,8 +1065,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
@@ -1007,8 +1091,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java
index 81a5e3b1ea5b..dbad423d741f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/TransitionRouteGroupsSettings.java
@@ -59,8 +59,11 @@
  * <p>For example, to set the total timeout of getTransitionRouteGroup to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings.Builder transitionRouteGroupsSettingsBuilder =
  *     TransitionRouteGroupsSettings.newBuilder();
  * transitionRouteGroupsSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java
index 64c731363050..ae8b1e0c9a51 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (VersionsClient versionsClient = VersionsClient.create()) {
  *   VersionName name =
  *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -90,8 +93,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings versionsSettings =
  *     VersionsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -102,8 +108,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings versionsSettings =
  *     VersionsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * VersionsClient versionsClient = VersionsClient.create(versionsSettings);
@@ -113,8 +122,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings versionsSettings =
  *     VersionsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -205,8 +217,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   for (Version element : versionsClient.listVersions(parent).iterateAll()) {
@@ -235,8 +250,11 @@ public final ListVersionsPagedResponse listVersions(FlowName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   for (Version element : versionsClient.listVersions(parent).iterateAll()) {
@@ -262,8 +280,11 @@ public final ListVersionsPagedResponse listVersions(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListVersionsRequest request =
    *       ListVersionsRequest.newBuilder()
@@ -291,8 +312,11 @@ public final ListVersionsPagedResponse listVersions(ListVersionsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListVersionsRequest request =
    *       ListVersionsRequest.newBuilder()
@@ -320,8 +344,11 @@ public final ListVersionsPagedResponse listVersions(ListVersionsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListVersionsRequest request =
    *       ListVersionsRequest.newBuilder()
@@ -355,8 +382,11 @@ public final UnaryCallable<ListVersionsRequest, ListVersionsResponse> listVersio
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -382,8 +412,11 @@ public final Version getVersion(VersionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -408,8 +441,11 @@ public final Version getVersion(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetVersionRequest request =
    *       GetVersionRequest.newBuilder()
@@ -435,8 +471,11 @@ public final Version getVersion(GetVersionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetVersionRequest request =
    *       GetVersionRequest.newBuilder()
@@ -470,8 +509,11 @@ public final UnaryCallable<GetVersionRequest, Version> getVersionCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   Version version = Version.newBuilder().build();
@@ -511,8 +553,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   Version version = Version.newBuilder().build();
@@ -549,8 +594,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CreateVersionRequest request =
    *       CreateVersionRequest.newBuilder()
@@ -585,8 +633,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CreateVersionRequest request =
    *       CreateVersionRequest.newBuilder()
@@ -621,8 +672,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CreateVersionRequest request =
    *       CreateVersionRequest.newBuilder()
@@ -646,8 +700,11 @@ public final UnaryCallable<CreateVersionRequest, Operation> createVersionCallabl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   Version version = Version.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -673,8 +730,11 @@ public final Version updateVersion(Version version, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   UpdateVersionRequest request =
    *       UpdateVersionRequest.newBuilder()
@@ -699,8 +759,11 @@ public final Version updateVersion(UpdateVersionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   UpdateVersionRequest request =
    *       UpdateVersionRequest.newBuilder()
@@ -724,8 +787,11 @@ public final UnaryCallable<UpdateVersionRequest, Version> updateVersionCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -751,8 +817,11 @@ public final void deleteVersion(VersionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -777,8 +846,11 @@ public final void deleteVersion(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   DeleteVersionRequest request =
    *       DeleteVersionRequest.newBuilder()
@@ -804,8 +876,11 @@ public final void deleteVersion(DeleteVersionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   DeleteVersionRequest request =
    *       DeleteVersionRequest.newBuilder()
@@ -839,8 +914,11 @@ public final UnaryCallable<DeleteVersionRequest, Empty> deleteVersionCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -875,8 +953,11 @@ public final OperationFuture<Empty, Struct> loadVersionAsync(VersionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -910,8 +991,11 @@ public final OperationFuture<Empty, Struct> loadVersionAsync(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   LoadVersionRequest request =
    *       LoadVersionRequest.newBuilder()
@@ -947,8 +1031,11 @@ public final OperationFuture<Empty, Struct> loadVersionAsync(LoadVersionRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   LoadVersionRequest request =
    *       LoadVersionRequest.newBuilder()
@@ -984,8 +1071,11 @@ public final OperationCallable<LoadVersionRequest, Empty, Struct> loadVersionOpe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   LoadVersionRequest request =
    *       LoadVersionRequest.newBuilder()
@@ -1011,8 +1101,11 @@ public final UnaryCallable<LoadVersionRequest, Operation> loadVersionCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName baseVersion =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -1041,8 +1134,11 @@ public final CompareVersionsResponse compareVersions(VersionName baseVersion) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String baseVersion =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -1069,8 +1165,11 @@ public final CompareVersionsResponse compareVersions(String baseVersion) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CompareVersionsRequest request =
    *       CompareVersionsRequest.newBuilder()
@@ -1100,8 +1199,11 @@ public final CompareVersionsResponse compareVersions(CompareVersionsRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CompareVersionsRequest request =
    *       CompareVersionsRequest.newBuilder()
@@ -1132,8 +1234,11 @@ public final CompareVersionsResponse compareVersions(CompareVersionsRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1162,8 +1267,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1192,8 +1300,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1228,8 +1339,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = versionsClient.getLocation(request);
@@ -1250,8 +1364,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = versionsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java
index b372324115bc..ab11bf731f95 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/VersionsSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of getVersion to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings.Builder versionsSettingsBuilder = VersionsSettings.newBuilder();
  * versionsSettingsBuilder
  *     .getVersionSettings()
  *     .setRetrySettings(
- *         versionsSettingsBuilder
- *             .getVersionSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         versionsSettingsBuilder.getVersionSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * VersionsSettings versionsSettings = versionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java
index 0d52147640fc..cba7b110c575 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksClient.java
@@ -46,8 +46,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
  *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
  *   Webhook response = webhooksClient.getWebhook(name);
@@ -83,8 +86,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings webhooksSettings =
  *     WebhooksSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -95,8 +101,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings webhooksSettings =
  *     WebhooksSettings.newBuilder().setEndpoint(myEndpoint).build();
  * WebhooksClient webhooksClient = WebhooksClient.create(webhooksSettings);
@@ -106,8 +115,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings webhooksSettings =
  *     WebhooksSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -173,8 +185,11 @@ public WebhooksStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Webhook element : webhooksClient.listWebhooks(parent).iterateAll()) {
@@ -202,8 +217,11 @@ public final ListWebhooksPagedResponse listWebhooks(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Webhook element : webhooksClient.listWebhooks(parent).iterateAll()) {
@@ -228,8 +246,11 @@ public final ListWebhooksPagedResponse listWebhooks(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListWebhooksRequest request =
    *       ListWebhooksRequest.newBuilder()
@@ -257,8 +278,11 @@ public final ListWebhooksPagedResponse listWebhooks(ListWebhooksRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListWebhooksRequest request =
    *       ListWebhooksRequest.newBuilder()
@@ -286,8 +310,11 @@ public final ListWebhooksPagedResponse listWebhooks(ListWebhooksRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListWebhooksRequest request =
    *       ListWebhooksRequest.newBuilder()
@@ -321,8 +348,11 @@ public final UnaryCallable<ListWebhooksRequest, ListWebhooksResponse> listWebhoo
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
    *   Webhook response = webhooksClient.getWebhook(name);
@@ -346,8 +376,11 @@ public final Webhook getWebhook(WebhookName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]").toString();
    *   Webhook response = webhooksClient.getWebhook(name);
@@ -370,8 +403,11 @@ public final Webhook getWebhook(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetWebhookRequest request =
    *       GetWebhookRequest.newBuilder()
@@ -395,8 +431,11 @@ public final Webhook getWebhook(GetWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetWebhookRequest request =
    *       GetWebhookRequest.newBuilder()
@@ -419,8 +458,11 @@ public final UnaryCallable<GetWebhookRequest, Webhook> getWebhookCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Webhook webhook = Webhook.newBuilder().build();
@@ -449,8 +491,11 @@ public final Webhook createWebhook(AgentName parent, Webhook webhook) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Webhook webhook = Webhook.newBuilder().build();
@@ -476,8 +521,11 @@ public final Webhook createWebhook(String parent, Webhook webhook) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   CreateWebhookRequest request =
    *       CreateWebhookRequest.newBuilder()
@@ -502,8 +550,11 @@ public final Webhook createWebhook(CreateWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   CreateWebhookRequest request =
    *       CreateWebhookRequest.newBuilder()
@@ -527,8 +578,11 @@ public final UnaryCallable<CreateWebhookRequest, Webhook> createWebhookCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   Webhook webhook = Webhook.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -554,8 +608,11 @@ public final Webhook updateWebhook(Webhook webhook, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   UpdateWebhookRequest request =
    *       UpdateWebhookRequest.newBuilder()
@@ -580,8 +637,11 @@ public final Webhook updateWebhook(UpdateWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   UpdateWebhookRequest request =
    *       UpdateWebhookRequest.newBuilder()
@@ -605,8 +665,11 @@ public final UnaryCallable<UpdateWebhookRequest, Webhook> updateWebhookCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
    *   webhooksClient.deleteWebhook(name);
@@ -630,8 +693,11 @@ public final void deleteWebhook(WebhookName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]").toString();
    *   webhooksClient.deleteWebhook(name);
@@ -654,8 +720,11 @@ public final void deleteWebhook(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   DeleteWebhookRequest request =
    *       DeleteWebhookRequest.newBuilder()
@@ -680,8 +749,11 @@ public final void deleteWebhook(DeleteWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   DeleteWebhookRequest request =
    *       DeleteWebhookRequest.newBuilder()
@@ -705,8 +777,11 @@ public final UnaryCallable<DeleteWebhookRequest, Empty> deleteWebhookCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -735,8 +810,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -765,8 +843,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -801,8 +882,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = webhooksClient.getLocation(request);
@@ -823,8 +907,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = webhooksClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java
index 7fa70d79612c..3a7ddef8d2bc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhooksSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getWebhook to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings.Builder webhooksSettingsBuilder = WebhooksSettings.newBuilder();
  * webhooksSettingsBuilder
  *     .getWebhookSettings()
  *     .setRetrySettings(
- *         webhooksSettingsBuilder
- *             .getWebhookSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         webhooksSettingsBuilder.getWebhookSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * WebhooksSettings webhooksSettings = webhooksSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/package-info.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/package-info.java
index 8a70b16c8831..b9e6bc5d3642 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/package-info.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/package-info.java
@@ -26,8 +26,11 @@
  * <p>Sample for AgentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (AgentsClient agentsClient = AgentsClient.create()) {
  *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Agent response = agentsClient.getAgent(name);
@@ -42,8 +45,11 @@
  * <p>Sample for ChangelogsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
  *   ChangelogName name = ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]");
  *   Changelog response = changelogsClient.getChangelog(name);
@@ -58,8 +64,11 @@
  * <p>Sample for DeploymentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
  *   DeploymentName name =
  *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]");
@@ -75,8 +84,11 @@
  * <p>Sample for EntityTypesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
  *   EntityTypeName name =
  *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -92,8 +104,11 @@
  * <p>Sample for EnvironmentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
  *   EnvironmentName name =
  *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -109,8 +124,11 @@
  * <p>Sample for ExperimentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
  *   ExperimentName name =
  *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -125,8 +143,11 @@
  * <p>Sample for FlowsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (FlowsClient flowsClient = FlowsClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Flow flow = Flow.newBuilder().build();
@@ -141,8 +162,11 @@
  * <p>Sample for IntentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (IntentsClient intentsClient = IntentsClient.create()) {
  *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
  *   Intent response = intentsClient.getIntent(name);
@@ -156,8 +180,11 @@
  * <p>Sample for PagesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (PagesClient pagesClient = PagesClient.create()) {
  *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
  *   Page response = pagesClient.getPage(name);
@@ -171,8 +198,11 @@
  * <p>Sample for SecuritySettingsServiceClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SecuritySettingsServiceClient securitySettingsServiceClient =
  *     SecuritySettingsServiceClient.create()) {
  *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -191,8 +221,11 @@
  * <p>Sample for SessionsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionsClient sessionsClient = SessionsClient.create()) {
  *   DetectIntentRequest request =
  *       DetectIntentRequest.newBuilder()
@@ -216,8 +249,11 @@
  * <p>Sample for SessionEntityTypesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
  *   SessionEntityTypeName name =
  *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -234,8 +270,11 @@
  * <p>Sample for TestCasesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   testCasesClient.batchDeleteTestCases(parent);
@@ -250,8 +289,11 @@
  * <p>Sample for TransitionRouteGroupsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
  *     TransitionRouteGroupsClient.create()) {
  *   TransitionRouteGroupName name =
@@ -268,8 +310,11 @@
  * <p>Sample for VersionsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (VersionsClient versionsClient = VersionsClient.create()) {
  *   VersionName name =
  *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -284,8 +329,11 @@
  * <p>Sample for WebhooksClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
  *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
  *   Webhook response = webhooksClient.getWebhook(name);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java
index 9848477a4413..d3d61c15caf3 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/AgentsStubSettings.java
@@ -95,16 +95,16 @@
  * <p>For example, to set the total timeout of getAgent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsStubSettings.Builder agentsSettingsBuilder = AgentsStubSettings.newBuilder();
  * agentsSettingsBuilder
  *     .getAgentSettings()
  *     .setRetrySettings(
- *         agentsSettingsBuilder
- *             .getAgentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         agentsSettingsBuilder.getAgentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * AgentsStubSettings agentsSettings = agentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java
index 56ff211ef850..47c2e1bdab19 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ChangelogsStubSettings.java
@@ -79,16 +79,16 @@
  * <p>For example, to set the total timeout of getChangelog to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsStubSettings.Builder changelogsSettingsBuilder = ChangelogsStubSettings.newBuilder();
  * changelogsSettingsBuilder
  *     .getChangelogSettings()
  *     .setRetrySettings(
- *         changelogsSettingsBuilder
- *             .getChangelogSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         changelogsSettingsBuilder.getChangelogSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ChangelogsStubSettings changelogsSettings = changelogsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java
index d956a58f2836..abb1ad4d53dd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/DeploymentsStubSettings.java
@@ -79,17 +79,17 @@
  * <p>For example, to set the total timeout of getDeployment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsStubSettings.Builder deploymentsSettingsBuilder =
  *     DeploymentsStubSettings.newBuilder();
  * deploymentsSettingsBuilder
  *     .getDeploymentSettings()
  *     .setRetrySettings(
- *         deploymentsSettingsBuilder
- *             .getDeploymentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         deploymentsSettingsBuilder.getDeploymentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * DeploymentsStubSettings deploymentsSettings = deploymentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java
index 976c627860e0..4a7ea11a517a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EntityTypesStubSettings.java
@@ -83,17 +83,17 @@
  * <p>For example, to set the total timeout of getEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesStubSettings.Builder entityTypesSettingsBuilder =
  *     EntityTypesStubSettings.newBuilder();
  * entityTypesSettingsBuilder
  *     .getEntityTypeSettings()
  *     .setRetrySettings(
- *         entityTypesSettingsBuilder
- *             .getEntityTypeSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         entityTypesSettingsBuilder.getEntityTypeSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EntityTypesStubSettings entityTypesSettings = entityTypesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java
index a8c52af0a96e..e3d53a9a9cd4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/EnvironmentsStubSettings.java
@@ -102,17 +102,17 @@
  * <p>For example, to set the total timeout of getEnvironment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsStubSettings.Builder environmentsSettingsBuilder =
  *     EnvironmentsStubSettings.newBuilder();
  * environmentsSettingsBuilder
  *     .getEnvironmentSettings()
  *     .setRetrySettings(
- *         environmentsSettingsBuilder
- *             .getEnvironmentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         environmentsSettingsBuilder.getEnvironmentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EnvironmentsStubSettings environmentsSettings = environmentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java
index 8eb894618072..2a3e6d42a5bf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/ExperimentsStubSettings.java
@@ -85,17 +85,17 @@
  * <p>For example, to set the total timeout of getExperiment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsStubSettings.Builder experimentsSettingsBuilder =
  *     ExperimentsStubSettings.newBuilder();
  * experimentsSettingsBuilder
  *     .getExperimentSettings()
  *     .setRetrySettings(
- *         experimentsSettingsBuilder
- *             .getExperimentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         experimentsSettingsBuilder.getExperimentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ExperimentsStubSettings experimentsSettings = experimentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java
index f29e28f2ba13..921f5a7831ee 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/FlowsStubSettings.java
@@ -97,16 +97,16 @@
  * <p>For example, to set the total timeout of createFlow to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsStubSettings.Builder flowsSettingsBuilder = FlowsStubSettings.newBuilder();
  * flowsSettingsBuilder
  *     .createFlowSettings()
  *     .setRetrySettings(
- *         flowsSettingsBuilder
- *             .createFlowSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         flowsSettingsBuilder.createFlowSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * FlowsStubSettings flowsSettings = flowsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java
index 2f3d212a6208..d4d93f4011d4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonAgentsStub.java
@@ -170,7 +170,8 @@ public class HttpJsonAgentsStub extends AgentsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("agent", request.getAgent()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("agent", request.getAgent(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Agent>newBuilder()
@@ -204,7 +205,8 @@ public class HttpJsonAgentsStub extends AgentsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("agent", request.getAgent()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("agent", request.getAgent(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Agent>newBuilder()
@@ -272,7 +274,7 @@ public class HttpJsonAgentsStub extends AgentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -311,7 +313,7 @@ public class HttpJsonAgentsStub extends AgentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -350,7 +352,7 @@ public class HttpJsonAgentsStub extends AgentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<AgentValidationResult>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java
index 2ec4bd9126d3..a4935acc717e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEntityTypesStub.java
@@ -164,7 +164,7 @@ public class HttpJsonEntityTypesStub extends EntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("entityType", request.getEntityType()))
+                                  .toBody("entityType", request.getEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<EntityType>newBuilder()
@@ -204,7 +204,7 @@ public class HttpJsonEntityTypesStub extends EntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("entityType", request.getEntityType()))
+                                  .toBody("entityType", request.getEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<EntityType>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java
index 5366a8b48302..29c8f75d147f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonEnvironmentsStub.java
@@ -183,7 +183,7 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("environment", request.getEnvironment()))
+                                  .toBody("environment", request.getEnvironment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -224,7 +224,7 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("environment", request.getEnvironment()))
+                                  .toBody("environment", request.getEnvironment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -335,7 +335,8 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearEnvironment().build()))
+                                  .toBody(
+                                      "*", request.toBuilder().clearEnvironment().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -413,7 +414,8 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearEnvironment().build()))
+                                  .toBody(
+                                      "*", request.toBuilder().clearEnvironment().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java
index 3221f6c85719..02432568572b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonExperimentsStub.java
@@ -160,7 +160,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("experiment", request.getExperiment()))
+                                  .toBody("experiment", request.getExperiment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
@@ -198,7 +198,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("experiment", request.getExperiment()))
+                                  .toBody("experiment", request.getExperiment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
@@ -267,7 +267,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
@@ -303,7 +303,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java
index 3b5d9164e590..f9d06662e37e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonFlowsStub.java
@@ -107,7 +107,8 @@ public class HttpJsonFlowsStub extends FlowsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("flow", request.getFlow()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("flow", request.getFlow(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Flow>newBuilder()
@@ -245,7 +246,8 @@ public class HttpJsonFlowsStub extends FlowsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("flow", request.getFlow()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("flow", request.getFlow(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Flow>newBuilder()
@@ -280,7 +282,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                   .setRequestBodyExtractor(
                       request ->
                           ProtoRestSerializer.create()
-                              .toBody("*", request.toBuilder().clearName().build()))
+                              .toBody("*", request.toBuilder().clearName().build(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Operation>newBuilder()
@@ -319,7 +321,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<FlowValidationResult>newBuilder()
@@ -390,7 +392,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -429,7 +431,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java
index ac8bc3341219..74ca2d555752 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonIntentsStub.java
@@ -162,7 +162,8 @@ public class HttpJsonIntentsStub extends IntentsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("intent", request.getIntent()))
+                              ProtoRestSerializer.create()
+                                  .toBody("intent", request.getIntent(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Intent>newBuilder()
@@ -201,7 +202,8 @@ public class HttpJsonIntentsStub extends IntentsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("intent", request.getIntent()))
+                              ProtoRestSerializer.create()
+                                  .toBody("intent", request.getIntent(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Intent>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java
index af793b517697..ece623bd8d4d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonPagesStub.java
@@ -158,7 +158,8 @@ public class HttpJsonPagesStub extends PagesStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("page", request.getPage()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("page", request.getPage(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Page>newBuilder()
@@ -193,7 +194,8 @@ public class HttpJsonPagesStub extends PagesStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("page", request.getPage()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("page", request.getPage(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Page>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java
index 5b1e03be9aba..0303133a4ef0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSecuritySettingsServiceStub.java
@@ -91,7 +91,7 @@ public class HttpJsonSecuritySettingsServiceStub extends SecuritySettingsService
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("securitySettings", request.getSecuritySettings()))
+                                  .toBody("securitySettings", request.getSecuritySettings(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SecuritySettings>newBuilder()
@@ -166,7 +166,7 @@ public class HttpJsonSecuritySettingsServiceStub extends SecuritySettingsService
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("securitySettings", request.getSecuritySettings()))
+                                  .toBody("securitySettings", request.getSecuritySettings(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SecuritySettings>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java
index fb37272be171..cff89fd81d98 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionEntityTypesStub.java
@@ -169,7 +169,8 @@ public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("sessionEntityType", request.getSessionEntityType()))
+                                  .toBody(
+                                      "sessionEntityType", request.getSessionEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SessionEntityType>newBuilder()
@@ -212,7 +213,8 @@ public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("sessionEntityType", request.getSessionEntityType()))
+                                  .toBody(
+                                      "sessionEntityType", request.getSessionEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SessionEntityType>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java
index 5adf00b1646c..2a21165ff865 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonSessionsStub.java
@@ -89,7 +89,7 @@ public class HttpJsonSessionsStub extends SessionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearSession().build()))
+                                  .toBody("*", request.toBuilder().clearSession().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<DetectIntentResponse>newBuilder()
@@ -127,7 +127,7 @@ public class HttpJsonSessionsStub extends SessionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearSession().build()))
+                                  .toBody("*", request.toBuilder().clearSession().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<MatchIntentResponse>newBuilder()
@@ -167,7 +167,8 @@ public class HttpJsonSessionsStub extends SessionsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("*", request.toBuilder().build()))
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<FulfillIntentResponse>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java
index 14a49004417b..28c8b6eca037 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTestCasesStub.java
@@ -159,7 +159,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Empty>newBuilder()
@@ -228,7 +228,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("testCase", request.getTestCase()))
+                                  .toBody("testCase", request.getTestCase(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TestCase>newBuilder()
@@ -266,7 +266,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("testCase", request.getTestCase()))
+                                  .toBody("testCase", request.getTestCase(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TestCase>newBuilder()
@@ -302,7 +302,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -341,7 +341,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -414,7 +414,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -453,7 +453,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java
index af98803fd593..9f90b9772178 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonTransitionRouteGroupsStub.java
@@ -170,7 +170,9 @@ public class HttpJsonTransitionRouteGroupsStub extends TransitionRouteGroupsStub
                           request ->
                               ProtoRestSerializer.create()
                                   .toBody(
-                                      "transitionRouteGroup", request.getTransitionRouteGroup()))
+                                      "transitionRouteGroup",
+                                      request.getTransitionRouteGroup(),
+                                      false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TransitionRouteGroup>newBuilder()
@@ -214,7 +216,9 @@ public class HttpJsonTransitionRouteGroupsStub extends TransitionRouteGroupsStub
                           request ->
                               ProtoRestSerializer.create()
                                   .toBody(
-                                      "transitionRouteGroup", request.getTransitionRouteGroup()))
+                                      "transitionRouteGroup",
+                                      request.getTransitionRouteGroup(),
+                                      false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TransitionRouteGroup>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java
index f3f3e34673b1..29321ee97c6f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonVersionsStub.java
@@ -171,7 +171,8 @@ public class HttpJsonVersionsStub extends VersionsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("version", request.getVersion()))
+                              ProtoRestSerializer.create()
+                                  .toBody("version", request.getVersion(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -211,7 +212,8 @@ public class HttpJsonVersionsStub extends VersionsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("version", request.getVersion()))
+                              ProtoRestSerializer.create()
+                                  .toBody("version", request.getVersion(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Version>newBuilder()
@@ -280,7 +282,7 @@ public class HttpJsonVersionsStub extends VersionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -320,7 +322,8 @@ public class HttpJsonVersionsStub extends VersionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearBaseVersion().build()))
+                                  .toBody(
+                                      "*", request.toBuilder().clearBaseVersion().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<CompareVersionsResponse>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java
index da6b7425255d..677441046850 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/HttpJsonWebhooksStub.java
@@ -156,7 +156,8 @@ public class HttpJsonWebhooksStub extends WebhooksStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("webhook", request.getWebhook()))
+                              ProtoRestSerializer.create()
+                                  .toBody("webhook", request.getWebhook(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Webhook>newBuilder()
@@ -193,7 +194,8 @@ public class HttpJsonWebhooksStub extends WebhooksStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("webhook", request.getWebhook()))
+                              ProtoRestSerializer.create()
+                                  .toBody("webhook", request.getWebhook(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Webhook>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java
index e2e045136fbf..7f8918ab4cdb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/IntentsStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of getIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsStubSettings.Builder intentsSettingsBuilder = IntentsStubSettings.newBuilder();
  * intentsSettingsBuilder
  *     .getIntentSettings()
  *     .setRetrySettings(
- *         intentsSettingsBuilder
- *             .getIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         intentsSettingsBuilder.getIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * IntentsStubSettings intentsSettings = intentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java
index f1515669c82a..f8fede26b688 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/PagesStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of getPage to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesStubSettings.Builder pagesSettingsBuilder = PagesStubSettings.newBuilder();
  * pagesSettingsBuilder
  *     .getPageSettings()
  *     .setRetrySettings(
- *         pagesSettingsBuilder
- *             .getPageSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         pagesSettingsBuilder.getPageSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * PagesStubSettings pagesSettings = pagesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java
index 82454646426c..85bb1f6de2d0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SecuritySettingsServiceStubSettings.java
@@ -83,8 +83,11 @@
  * <p>For example, to set the total timeout of createSecuritySettings to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceStubSettings.Builder securitySettingsServiceSettingsBuilder =
  *     SecuritySettingsServiceStubSettings.newBuilder();
  * securitySettingsServiceSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java
index 727b365a9508..99102ab0623a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionEntityTypesStubSettings.java
@@ -83,8 +83,11 @@
  * <p>For example, to set the total timeout of getSessionEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesStubSettings.Builder sessionEntityTypesSettingsBuilder =
  *     SessionEntityTypesStubSettings.newBuilder();
  * sessionEntityTypesSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java
index eb4dd2d95285..d9c0e59381b5 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/SessionsStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of detectIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsStubSettings.Builder sessionsSettingsBuilder = SessionsStubSettings.newBuilder();
  * sessionsSettingsBuilder
  *     .detectIntentSettings()
  *     .setRetrySettings(
- *         sessionsSettingsBuilder
- *             .detectIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         sessionsSettingsBuilder.detectIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * SessionsStubSettings sessionsSettings = sessionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java
index 013bee16f688..5cfb430567be 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TestCasesStubSettings.java
@@ -107,16 +107,16 @@
  * <p>For example, to set the total timeout of batchDeleteTestCases to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesStubSettings.Builder testCasesSettingsBuilder = TestCasesStubSettings.newBuilder();
  * testCasesSettingsBuilder
  *     .batchDeleteTestCasesSettings()
  *     .setRetrySettings(
- *         testCasesSettingsBuilder
- *             .batchDeleteTestCasesSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         testCasesSettingsBuilder.batchDeleteTestCasesSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * TestCasesStubSettings testCasesSettings = testCasesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java
index b0ae1d0278b3..4ec9dedfeac7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/TransitionRouteGroupsStubSettings.java
@@ -83,8 +83,11 @@
  * <p>For example, to set the total timeout of getTransitionRouteGroup to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsStubSettings.Builder transitionRouteGroupsSettingsBuilder =
  *     TransitionRouteGroupsStubSettings.newBuilder();
  * transitionRouteGroupsSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java
index eec378354b2f..9a8bb66026fd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/VersionsStubSettings.java
@@ -93,16 +93,16 @@
  * <p>For example, to set the total timeout of getVersion to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsStubSettings.Builder versionsSettingsBuilder = VersionsStubSettings.newBuilder();
  * versionsSettingsBuilder
  *     .getVersionSettings()
  *     .setRetrySettings(
- *         versionsSettingsBuilder
- *             .getVersionSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         versionsSettingsBuilder.getVersionSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * VersionsStubSettings versionsSettings = versionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java
index d78db53c2e62..19280ad5c0c9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3/stub/WebhooksStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of getWebhook to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksStubSettings.Builder webhooksSettingsBuilder = WebhooksStubSettings.newBuilder();
  * webhooksSettingsBuilder
  *     .getWebhookSettings()
  *     .setRetrySettings(
- *         webhooksSettingsBuilder
- *             .getWebhookSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         webhooksSettingsBuilder.getWebhookSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * WebhooksStubSettings webhooksSettings = webhooksSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java
index 3a008abded17..44f8fdebeb4f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (AgentsClient agentsClient = AgentsClient.create()) {
  *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Agent response = agentsClient.getAgent(name);
@@ -89,8 +92,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings agentsSettings =
  *     AgentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -101,8 +107,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings agentsSettings = AgentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * AgentsClient agentsClient = AgentsClient.create(agentsSettings);
  * }</pre>
@@ -111,8 +120,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings agentsSettings =
  *     AgentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -204,8 +216,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
    *   for (Agent element : agentsClient.listAgents(parent).iterateAll()) {
@@ -231,8 +246,11 @@ public final ListAgentsPagedResponse listAgents(LocationName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
    *   for (Agent element : agentsClient.listAgents(parent).iterateAll()) {
@@ -257,8 +275,11 @@ public final ListAgentsPagedResponse listAgents(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListAgentsRequest request =
    *       ListAgentsRequest.newBuilder()
@@ -286,8 +307,11 @@ public final ListAgentsPagedResponse listAgents(ListAgentsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListAgentsRequest request =
    *       ListAgentsRequest.newBuilder()
@@ -314,8 +338,11 @@ public final UnaryCallable<ListAgentsRequest, ListAgentsPagedResponse> listAgent
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListAgentsRequest request =
    *       ListAgentsRequest.newBuilder()
@@ -349,8 +376,11 @@ public final UnaryCallable<ListAgentsRequest, ListAgentsResponse> listAgentsCall
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Agent response = agentsClient.getAgent(name);
@@ -374,8 +404,11 @@ public final Agent getAgent(AgentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Agent response = agentsClient.getAgent(name);
@@ -398,8 +431,11 @@ public final Agent getAgent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentRequest request =
    *       GetAgentRequest.newBuilder()
@@ -423,8 +459,11 @@ public final Agent getAgent(GetAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentRequest request =
    *       GetAgentRequest.newBuilder()
@@ -450,8 +489,11 @@ public final UnaryCallable<GetAgentRequest, Agent> getAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
    *   Agent agent = Agent.newBuilder().build();
@@ -483,8 +525,11 @@ public final Agent createAgent(LocationName parent, Agent agent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
    *   Agent agent = Agent.newBuilder().build();
@@ -513,8 +558,11 @@ public final Agent createAgent(String parent, Agent agent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   CreateAgentRequest request =
    *       CreateAgentRequest.newBuilder()
@@ -542,8 +590,11 @@ public final Agent createAgent(CreateAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   CreateAgentRequest request =
    *       CreateAgentRequest.newBuilder()
@@ -570,8 +621,11 @@ public final UnaryCallable<CreateAgentRequest, Agent> createAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   Agent agent = Agent.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -600,8 +654,11 @@ public final Agent updateAgent(Agent agent, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   UpdateAgentRequest request =
    *       UpdateAgentRequest.newBuilder()
@@ -629,8 +686,11 @@ public final Agent updateAgent(UpdateAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   UpdateAgentRequest request =
    *       UpdateAgentRequest.newBuilder()
@@ -654,8 +714,11 @@ public final UnaryCallable<UpdateAgentRequest, Agent> updateAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   agentsClient.deleteAgent(name);
@@ -679,8 +742,11 @@ public final void deleteAgent(AgentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   agentsClient.deleteAgent(name);
@@ -703,8 +769,11 @@ public final void deleteAgent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   DeleteAgentRequest request =
    *       DeleteAgentRequest.newBuilder()
@@ -728,8 +797,11 @@ public final void deleteAgent(DeleteAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   DeleteAgentRequest request =
    *       DeleteAgentRequest.newBuilder()
@@ -760,8 +832,11 @@ public final UnaryCallable<DeleteAgentRequest, Empty> deleteAgentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ExportAgentRequest request =
    *       ExportAgentRequest.newBuilder()
@@ -798,8 +873,11 @@ public final OperationFuture<ExportAgentResponse, Struct> exportAgentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ExportAgentRequest request =
    *       ExportAgentRequest.newBuilder()
@@ -836,8 +914,11 @@ public final OperationFuture<ExportAgentResponse, Struct> exportAgentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ExportAgentRequest request =
    *       ExportAgentRequest.newBuilder()
@@ -879,8 +960,11 @@ public final UnaryCallable<ExportAgentRequest, Operation> exportAgentCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   RestoreAgentRequest request =
    *       RestoreAgentRequest.newBuilder()
@@ -919,8 +1003,11 @@ public final OperationFuture<Empty, Struct> restoreAgentAsync(RestoreAgentReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   RestoreAgentRequest request =
    *       RestoreAgentRequest.newBuilder()
@@ -960,8 +1047,11 @@ public final OperationFuture<Empty, Struct> restoreAgentAsync(RestoreAgentReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   RestoreAgentRequest request =
    *       RestoreAgentRequest.newBuilder()
@@ -986,8 +1076,11 @@ public final UnaryCallable<RestoreAgentRequest, Operation> restoreAgentCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ValidateAgentRequest request =
    *       ValidateAgentRequest.newBuilder()
@@ -1014,8 +1107,11 @@ public final AgentValidationResult validateAgent(ValidateAgentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ValidateAgentRequest request =
    *       ValidateAgentRequest.newBuilder()
@@ -1041,8 +1137,11 @@ public final UnaryCallable<ValidateAgentRequest, AgentValidationResult> validate
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   AgentValidationResultName name =
    *       AgentValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
@@ -1070,8 +1169,11 @@ public final AgentValidationResult getAgentValidationResult(AgentValidationResul
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   String name = AgentValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   AgentValidationResult response = agentsClient.getAgentValidationResult(name);
@@ -1096,8 +1198,11 @@ public final AgentValidationResult getAgentValidationResult(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentValidationResultRequest request =
    *       GetAgentValidationResultRequest.newBuilder()
@@ -1125,8 +1230,11 @@ public final AgentValidationResult getAgentValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetAgentValidationResultRequest request =
    *       GetAgentValidationResultRequest.newBuilder()
@@ -1153,8 +1261,11 @@ public final AgentValidationResult getAgentValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1183,8 +1294,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1213,8 +1327,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1249,8 +1366,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = agentsClient.getLocation(request);
@@ -1271,8 +1391,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (AgentsClient agentsClient = AgentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = agentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java
index 51701bedf075..41f9dd5b82c9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/AgentsSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of getAgent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsSettings.Builder agentsSettingsBuilder = AgentsSettings.newBuilder();
  * agentsSettingsBuilder
  *     .getAgentSettings()
  *     .setRetrySettings(
- *         agentsSettingsBuilder
- *             .getAgentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         agentsSettingsBuilder.getAgentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * AgentsSettings agentsSettings = agentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java
index c6858e76c924..31219836095c 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsClient.java
@@ -46,8 +46,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
  *   ChangelogName name = ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]");
  *   Changelog response = changelogsClient.getChangelog(name);
@@ -83,8 +86,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings changelogsSettings =
  *     ChangelogsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -95,8 +101,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings changelogsSettings =
  *     ChangelogsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * ChangelogsClient changelogsClient = ChangelogsClient.create(changelogsSettings);
@@ -106,8 +115,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings changelogsSettings =
  *     ChangelogsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -174,8 +186,11 @@ public ChangelogsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Changelog element : changelogsClient.listChangelogs(parent).iterateAll()) {
@@ -203,8 +218,11 @@ public final ListChangelogsPagedResponse listChangelogs(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Changelog element : changelogsClient.listChangelogs(parent).iterateAll()) {
@@ -229,8 +247,11 @@ public final ListChangelogsPagedResponse listChangelogs(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListChangelogsRequest request =
    *       ListChangelogsRequest.newBuilder()
@@ -259,8 +280,11 @@ public final ListChangelogsPagedResponse listChangelogs(ListChangelogsRequest re
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListChangelogsRequest request =
    *       ListChangelogsRequest.newBuilder()
@@ -290,8 +314,11 @@ public final ListChangelogsPagedResponse listChangelogs(ListChangelogsRequest re
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListChangelogsRequest request =
    *       ListChangelogsRequest.newBuilder()
@@ -327,8 +354,11 @@ public final ListChangelogsPagedResponse listChangelogs(ListChangelogsRequest re
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ChangelogName name = ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]");
    *   Changelog response = changelogsClient.getChangelog(name);
@@ -353,8 +383,11 @@ public final Changelog getChangelog(ChangelogName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   String name =
    *       ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]").toString();
@@ -379,8 +412,11 @@ public final Changelog getChangelog(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetChangelogRequest request =
    *       GetChangelogRequest.newBuilder()
@@ -405,8 +441,11 @@ public final Changelog getChangelog(GetChangelogRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetChangelogRequest request =
    *       GetChangelogRequest.newBuilder()
@@ -430,8 +469,11 @@ public final UnaryCallable<GetChangelogRequest, Changelog> getChangelogCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -460,8 +502,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -491,8 +536,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -527,8 +575,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = changelogsClient.getLocation(request);
@@ -549,8 +600,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = changelogsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java
index 0476cfef79c9..6f8e0c3f254f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ChangelogsSettings.java
@@ -58,16 +58,16 @@
  * <p>For example, to set the total timeout of getChangelog to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsSettings.Builder changelogsSettingsBuilder = ChangelogsSettings.newBuilder();
  * changelogsSettingsBuilder
  *     .getChangelogSettings()
  *     .setRetrySettings(
- *         changelogsSettingsBuilder
- *             .getChangelogSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         changelogsSettingsBuilder.getChangelogSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ChangelogsSettings changelogsSettings = changelogsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java
index 23cb3e4570fd..996184c1238b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsClient.java
@@ -46,8 +46,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
  *   DeploymentName name =
  *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]");
@@ -84,8 +87,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings deploymentsSettings =
  *     DeploymentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -96,8 +102,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings deploymentsSettings =
  *     DeploymentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * DeploymentsClient deploymentsClient = DeploymentsClient.create(deploymentsSettings);
@@ -107,8 +116,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings deploymentsSettings =
  *     DeploymentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -177,8 +189,11 @@ public DeploymentsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -209,8 +224,11 @@ public final ListDeploymentsPagedResponse listDeployments(EnvironmentName parent
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -238,8 +256,11 @@ public final ListDeploymentsPagedResponse listDeployments(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListDeploymentsRequest request =
    *       ListDeploymentsRequest.newBuilder()
@@ -270,8 +291,11 @@ public final ListDeploymentsPagedResponse listDeployments(ListDeploymentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListDeploymentsRequest request =
    *       ListDeploymentsRequest.newBuilder()
@@ -303,8 +327,11 @@ public final ListDeploymentsPagedResponse listDeployments(ListDeploymentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListDeploymentsRequest request =
    *       ListDeploymentsRequest.newBuilder()
@@ -342,8 +369,11 @@ public final ListDeploymentsPagedResponse listDeployments(ListDeploymentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   DeploymentName name =
    *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]");
@@ -370,8 +400,11 @@ public final Deployment getDeployment(DeploymentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   String name =
    *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]")
@@ -398,8 +431,11 @@ public final Deployment getDeployment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetDeploymentRequest request =
    *       GetDeploymentRequest.newBuilder()
@@ -426,8 +462,11 @@ public final Deployment getDeployment(GetDeploymentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetDeploymentRequest request =
    *       GetDeploymentRequest.newBuilder()
@@ -453,8 +492,11 @@ public final UnaryCallable<GetDeploymentRequest, Deployment> getDeploymentCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -483,8 +525,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -514,8 +559,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -550,8 +598,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = deploymentsClient.getLocation(request);
@@ -572,8 +623,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = deploymentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java
index a600ab552d66..ba531568b43f 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/DeploymentsSettings.java
@@ -58,16 +58,16 @@
  * <p>For example, to set the total timeout of getDeployment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsSettings.Builder deploymentsSettingsBuilder = DeploymentsSettings.newBuilder();
  * deploymentsSettingsBuilder
  *     .getDeploymentSettings()
  *     .setRetrySettings(
- *         deploymentsSettingsBuilder
- *             .getDeploymentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         deploymentsSettingsBuilder.getDeploymentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * DeploymentsSettings deploymentsSettings = deploymentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java
index dff916be2fce..072531f8f78d 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesClient.java
@@ -48,8 +48,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
  *   EntityTypeName name =
  *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -86,8 +89,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings entityTypesSettings =
  *     EntityTypesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -98,8 +104,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings entityTypesSettings =
  *     EntityTypesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * EntityTypesClient entityTypesClient = EntityTypesClient.create(entityTypesSettings);
@@ -109,8 +118,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings entityTypesSettings =
  *     EntityTypesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -178,8 +190,11 @@ public EntityTypesStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (EntityType element : entityTypesClient.listEntityTypes(parent).iterateAll()) {
@@ -207,8 +222,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (EntityType element : entityTypesClient.listEntityTypes(parent).iterateAll()) {
@@ -233,8 +251,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListEntityTypesRequest request =
    *       ListEntityTypesRequest.newBuilder()
@@ -263,8 +284,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(ListEntityTypesRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListEntityTypesRequest request =
    *       ListEntityTypesRequest.newBuilder()
@@ -294,8 +318,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(ListEntityTypesRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListEntityTypesRequest request =
    *       ListEntityTypesRequest.newBuilder()
@@ -332,8 +359,11 @@ public final ListEntityTypesPagedResponse listEntityTypes(ListEntityTypesRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   EntityTypeName name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -359,8 +389,11 @@ public final EntityType getEntityType(EntityTypeName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]").toString();
@@ -385,8 +418,11 @@ public final EntityType getEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetEntityTypeRequest request =
    *       GetEntityTypeRequest.newBuilder()
@@ -413,8 +449,11 @@ public final EntityType getEntityType(GetEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetEntityTypeRequest request =
    *       GetEntityTypeRequest.newBuilder()
@@ -440,8 +479,11 @@ public final UnaryCallable<GetEntityTypeRequest, EntityType> getEntityTypeCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   EntityType entityType = EntityType.newBuilder().build();
@@ -470,8 +512,11 @@ public final EntityType createEntityType(AgentName parent, EntityType entityType
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   EntityType entityType = EntityType.newBuilder().build();
@@ -497,8 +542,11 @@ public final EntityType createEntityType(String parent, EntityType entityType) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   CreateEntityTypeRequest request =
    *       CreateEntityTypeRequest.newBuilder()
@@ -524,8 +572,11 @@ public final EntityType createEntityType(CreateEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   CreateEntityTypeRequest request =
    *       CreateEntityTypeRequest.newBuilder()
@@ -554,8 +605,11 @@ public final UnaryCallable<CreateEntityTypeRequest, EntityType> createEntityType
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   EntityType entityType = EntityType.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -586,8 +640,11 @@ public final EntityType updateEntityType(EntityType entityType, FieldMask update
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   UpdateEntityTypeRequest request =
    *       UpdateEntityTypeRequest.newBuilder()
@@ -616,8 +673,11 @@ public final EntityType updateEntityType(UpdateEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   UpdateEntityTypeRequest request =
    *       UpdateEntityTypeRequest.newBuilder()
@@ -646,8 +706,11 @@ public final UnaryCallable<UpdateEntityTypeRequest, EntityType> updateEntityType
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   EntityTypeName name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -676,8 +739,11 @@ public final void deleteEntityType(EntityTypeName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   String name =
    *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]").toString();
@@ -705,8 +771,11 @@ public final void deleteEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   DeleteEntityTypeRequest request =
    *       DeleteEntityTypeRequest.newBuilder()
@@ -736,8 +805,11 @@ public final void deleteEntityType(DeleteEntityTypeRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   DeleteEntityTypeRequest request =
    *       DeleteEntityTypeRequest.newBuilder()
@@ -763,8 +835,11 @@ public final UnaryCallable<DeleteEntityTypeRequest, Empty> deleteEntityTypeCalla
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -793,8 +868,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -824,8 +902,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -860,8 +941,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = entityTypesClient.getLocation(request);
@@ -882,8 +966,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = entityTypesClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java
index 2781d2b780b6..4f8099e86780 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EntityTypesSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesSettings.Builder entityTypesSettingsBuilder = EntityTypesSettings.newBuilder();
  * entityTypesSettingsBuilder
  *     .getEntityTypeSettings()
  *     .setRetrySettings(
- *         entityTypesSettingsBuilder
- *             .getEntityTypeSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         entityTypesSettingsBuilder.getEntityTypeSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EntityTypesSettings entityTypesSettings = entityTypesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java
index 9e896e14b323..557cdd9432e0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsClient.java
@@ -53,8 +53,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
  *   EnvironmentName name =
  *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -91,8 +94,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings environmentsSettings =
  *     EnvironmentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -103,8 +109,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings environmentsSettings =
  *     EnvironmentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * EnvironmentsClient environmentsClient = EnvironmentsClient.create(environmentsSettings);
@@ -114,8 +123,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings environmentsSettings =
  *     EnvironmentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -209,8 +221,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Environment element : environmentsClient.listEnvironments(parent).iterateAll()) {
@@ -240,8 +255,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Environment element : environmentsClient.listEnvironments(parent).iterateAll()) {
@@ -269,8 +287,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListEnvironmentsRequest request =
    *       ListEnvironmentsRequest.newBuilder()
@@ -299,8 +320,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(ListEnvironmentsRequ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListEnvironmentsRequest request =
    *       ListEnvironmentsRequest.newBuilder()
@@ -330,8 +354,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(ListEnvironmentsRequ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListEnvironmentsRequest request =
    *       ListEnvironmentsRequest.newBuilder()
@@ -367,8 +394,11 @@ public final ListEnvironmentsPagedResponse listEnvironments(ListEnvironmentsRequ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -395,8 +425,11 @@ public final Environment getEnvironment(EnvironmentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -422,8 +455,11 @@ public final Environment getEnvironment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetEnvironmentRequest request =
    *       GetEnvironmentRequest.newBuilder()
@@ -449,8 +485,11 @@ public final Environment getEnvironment(GetEnvironmentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetEnvironmentRequest request =
    *       GetEnvironmentRequest.newBuilder()
@@ -485,8 +524,11 @@ public final UnaryCallable<GetEnvironmentRequest, Environment> getEnvironmentCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Environment environment = Environment.newBuilder().build();
@@ -526,8 +568,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Environment environment = Environment.newBuilder().build();
@@ -564,8 +609,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   CreateEnvironmentRequest request =
    *       CreateEnvironmentRequest.newBuilder()
@@ -600,8 +648,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   CreateEnvironmentRequest request =
    *       CreateEnvironmentRequest.newBuilder()
@@ -636,8 +687,11 @@ public final OperationFuture<Environment, Struct> createEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   CreateEnvironmentRequest request =
    *       CreateEnvironmentRequest.newBuilder()
@@ -670,8 +724,11 @@ public final UnaryCallable<CreateEnvironmentRequest, Operation> createEnvironmen
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   Environment environment = Environment.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -709,8 +766,11 @@ public final OperationFuture<Environment, Struct> updateEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   UpdateEnvironmentRequest request =
    *       UpdateEnvironmentRequest.newBuilder()
@@ -744,8 +804,11 @@ public final OperationFuture<Environment, Struct> updateEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   UpdateEnvironmentRequest request =
    *       UpdateEnvironmentRequest.newBuilder()
@@ -779,8 +842,11 @@ public final OperationFuture<Environment, Struct> updateEnvironmentAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   UpdateEnvironmentRequest request =
    *       UpdateEnvironmentRequest.newBuilder()
@@ -805,8 +871,11 @@ public final UnaryCallable<UpdateEnvironmentRequest, Operation> updateEnvironmen
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -835,8 +904,11 @@ public final void deleteEnvironment(EnvironmentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -862,8 +934,11 @@ public final void deleteEnvironment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeleteEnvironmentRequest request =
    *       DeleteEnvironmentRequest.newBuilder()
@@ -889,8 +964,11 @@ public final void deleteEnvironment(DeleteEnvironmentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeleteEnvironmentRequest request =
    *       DeleteEnvironmentRequest.newBuilder()
@@ -916,8 +994,11 @@ public final UnaryCallable<DeleteEnvironmentRequest, Empty> deleteEnvironmentCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -949,8 +1030,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String name =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -979,8 +1063,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(Stri
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   LookupEnvironmentHistoryRequest request =
    *       LookupEnvironmentHistoryRequest.newBuilder()
@@ -1013,8 +1100,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   LookupEnvironmentHistoryRequest request =
    *       LookupEnvironmentHistoryRequest.newBuilder()
@@ -1046,8 +1136,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   LookupEnvironmentHistoryRequest request =
    *       LookupEnvironmentHistoryRequest.newBuilder()
@@ -1095,8 +1188,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   RunContinuousTestRequest request =
    *       RunContinuousTestRequest.newBuilder()
@@ -1133,8 +1229,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   RunContinuousTestRequest request =
    *       RunContinuousTestRequest.newBuilder()
@@ -1172,8 +1271,11 @@ public final LookupEnvironmentHistoryPagedResponse lookupEnvironmentHistory(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   RunContinuousTestRequest request =
    *       RunContinuousTestRequest.newBuilder()
@@ -1199,8 +1301,11 @@ public final UnaryCallable<RunContinuousTestRequest, Operation> runContinuousTes
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -1232,8 +1337,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -1262,8 +1370,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(St
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListContinuousTestResultsRequest request =
    *       ListContinuousTestResultsRequest.newBuilder()
@@ -1295,8 +1406,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListContinuousTestResultsRequest request =
    *       ListContinuousTestResultsRequest.newBuilder()
@@ -1328,8 +1442,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListContinuousTestResultsRequest request =
    *       ListContinuousTestResultsRequest.newBuilder()
@@ -1374,8 +1491,11 @@ public final ListContinuousTestResultsPagedResponse listContinuousTestResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeployFlowRequest request =
    *       DeployFlowRequest.newBuilder()
@@ -1412,8 +1532,11 @@ public final OperationFuture<DeployFlowResponse, DeployFlowMetadata> deployFlowA
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeployFlowRequest request =
    *       DeployFlowRequest.newBuilder()
@@ -1450,8 +1573,11 @@ public final OperationFuture<DeployFlowResponse, DeployFlowMetadata> deployFlowA
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   DeployFlowRequest request =
    *       DeployFlowRequest.newBuilder()
@@ -1479,8 +1605,11 @@ public final UnaryCallable<DeployFlowRequest, Operation> deployFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1509,8 +1638,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1540,8 +1672,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1576,8 +1711,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = environmentsClient.getLocation(request);
@@ -1598,8 +1736,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = environmentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java
index 027186cdd306..c27beab9f146 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/EnvironmentsSettings.java
@@ -64,16 +64,16 @@
  * <p>For example, to set the total timeout of getEnvironment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsSettings.Builder environmentsSettingsBuilder = EnvironmentsSettings.newBuilder();
  * environmentsSettingsBuilder
  *     .getEnvironmentSettings()
  *     .setRetrySettings(
- *         environmentsSettingsBuilder
- *             .getEnvironmentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         environmentsSettingsBuilder.getEnvironmentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EnvironmentsSettings environmentsSettings = environmentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java
index c7e6e82ae656..86ff72f8bb92 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsClient.java
@@ -48,8 +48,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
  *   ExperimentName name =
  *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -86,8 +89,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings experimentsSettings =
  *     ExperimentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -98,8 +104,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings experimentsSettings =
  *     ExperimentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * ExperimentsClient experimentsClient = ExperimentsClient.create(experimentsSettings);
@@ -109,8 +118,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings experimentsSettings =
  *     ExperimentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -179,8 +191,11 @@ public ExperimentsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -211,8 +226,11 @@ public final ListExperimentsPagedResponse listExperiments(EnvironmentName parent
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -240,8 +258,11 @@ public final ListExperimentsPagedResponse listExperiments(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListExperimentsRequest request =
    *       ListExperimentsRequest.newBuilder()
@@ -272,8 +293,11 @@ public final ListExperimentsPagedResponse listExperiments(ListExperimentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListExperimentsRequest request =
    *       ListExperimentsRequest.newBuilder()
@@ -305,8 +329,11 @@ public final ListExperimentsPagedResponse listExperiments(ListExperimentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListExperimentsRequest request =
    *       ListExperimentsRequest.newBuilder()
@@ -344,8 +371,11 @@ public final ListExperimentsPagedResponse listExperiments(ListExperimentsRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -372,8 +402,11 @@ public final Experiment getExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -400,8 +433,11 @@ public final Experiment getExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetExperimentRequest request =
    *       GetExperimentRequest.newBuilder()
@@ -428,8 +464,11 @@ public final Experiment getExperiment(GetExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetExperimentRequest request =
    *       GetExperimentRequest.newBuilder()
@@ -456,8 +495,11 @@ public final UnaryCallable<GetExperimentRequest, Experiment> getExperimentCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   EnvironmentName parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -490,8 +532,11 @@ public final Experiment createExperiment(EnvironmentName parent, Experiment expe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String parent =
    *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]").toString();
@@ -521,8 +566,11 @@ public final Experiment createExperiment(String parent, Experiment experiment) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   CreateExperimentRequest request =
    *       CreateExperimentRequest.newBuilder()
@@ -550,8 +598,11 @@ public final Experiment createExperiment(CreateExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   CreateExperimentRequest request =
    *       CreateExperimentRequest.newBuilder()
@@ -578,8 +629,11 @@ public final UnaryCallable<CreateExperimentRequest, Experiment> createExperiment
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   Experiment experiment = Experiment.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -607,8 +661,11 @@ public final Experiment updateExperiment(Experiment experiment, FieldMask update
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   UpdateExperimentRequest request =
    *       UpdateExperimentRequest.newBuilder()
@@ -633,8 +690,11 @@ public final Experiment updateExperiment(UpdateExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   UpdateExperimentRequest request =
    *       UpdateExperimentRequest.newBuilder()
@@ -659,8 +719,11 @@ public final UnaryCallable<UpdateExperimentRequest, Experiment> updateExperiment
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -687,8 +750,11 @@ public final void deleteExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -715,8 +781,11 @@ public final void deleteExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   DeleteExperimentRequest request =
    *       DeleteExperimentRequest.newBuilder()
@@ -743,8 +812,11 @@ public final void deleteExperiment(DeleteExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   DeleteExperimentRequest request =
    *       DeleteExperimentRequest.newBuilder()
@@ -771,8 +843,11 @@ public final UnaryCallable<DeleteExperimentRequest, Empty> deleteExperimentCalla
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -799,8 +874,11 @@ public final Experiment startExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -827,8 +905,11 @@ public final Experiment startExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StartExperimentRequest request =
    *       StartExperimentRequest.newBuilder()
@@ -856,8 +937,11 @@ public final Experiment startExperiment(StartExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StartExperimentRequest request =
    *       StartExperimentRequest.newBuilder()
@@ -885,8 +969,11 @@ public final UnaryCallable<StartExperimentRequest, Experiment> startExperimentCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ExperimentName name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -913,8 +1000,11 @@ public final Experiment stopExperiment(ExperimentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   String name =
    *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]")
@@ -941,8 +1031,11 @@ public final Experiment stopExperiment(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StopExperimentRequest request =
    *       StopExperimentRequest.newBuilder()
@@ -970,8 +1063,11 @@ public final Experiment stopExperiment(StopExperimentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   StopExperimentRequest request =
    *       StopExperimentRequest.newBuilder()
@@ -997,8 +1093,11 @@ public final UnaryCallable<StopExperimentRequest, Experiment> stopExperimentCall
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1027,8 +1126,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1058,8 +1160,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1094,8 +1199,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = experimentsClient.getLocation(request);
@@ -1116,8 +1224,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = experimentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java
index c563deb3fd07..18c7dabf8e41 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/ExperimentsSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getExperiment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsSettings.Builder experimentsSettingsBuilder = ExperimentsSettings.newBuilder();
  * experimentsSettingsBuilder
  *     .getExperimentSettings()
  *     .setRetrySettings(
- *         experimentsSettingsBuilder
- *             .getExperimentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         experimentsSettingsBuilder.getExperimentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ExperimentsSettings experimentsSettings = experimentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java
index 37a2a40cd2c6..bc5a7f3f00c8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (FlowsClient flowsClient = FlowsClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Flow flow = Flow.newBuilder().build();
@@ -90,8 +93,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings flowsSettings =
  *     FlowsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -102,8 +108,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings flowsSettings = FlowsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * FlowsClient flowsClient = FlowsClient.create(flowsSettings);
  * }</pre>
@@ -112,8 +121,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings flowsSettings =
  *     FlowsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -208,8 +220,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Flow flow = Flow.newBuilder().build();
@@ -241,8 +256,11 @@ public final Flow createFlow(AgentName parent, Flow flow) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Flow flow = Flow.newBuilder().build();
@@ -271,8 +289,11 @@ public final Flow createFlow(String parent, Flow flow) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   CreateFlowRequest request =
    *       CreateFlowRequest.newBuilder()
@@ -301,8 +322,11 @@ public final Flow createFlow(CreateFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   CreateFlowRequest request =
    *       CreateFlowRequest.newBuilder()
@@ -327,8 +351,11 @@ public final UnaryCallable<CreateFlowRequest, Flow> createFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowName name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   flowsClient.deleteFlow(name);
@@ -352,8 +379,11 @@ public final void deleteFlow(FlowName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   flowsClient.deleteFlow(name);
@@ -376,8 +406,11 @@ public final void deleteFlow(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   DeleteFlowRequest request =
    *       DeleteFlowRequest.newBuilder()
@@ -402,8 +435,11 @@ public final void deleteFlow(DeleteFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   DeleteFlowRequest request =
    *       DeleteFlowRequest.newBuilder()
@@ -427,8 +463,11 @@ public final UnaryCallable<DeleteFlowRequest, Empty> deleteFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Flow element : flowsClient.listFlows(parent).iterateAll()) {
@@ -454,8 +493,11 @@ public final ListFlowsPagedResponse listFlows(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Flow element : flowsClient.listFlows(parent).iterateAll()) {
@@ -480,8 +522,11 @@ public final ListFlowsPagedResponse listFlows(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListFlowsRequest request =
    *       ListFlowsRequest.newBuilder()
@@ -510,8 +555,11 @@ public final ListFlowsPagedResponse listFlows(ListFlowsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListFlowsRequest request =
    *       ListFlowsRequest.newBuilder()
@@ -539,8 +587,11 @@ public final UnaryCallable<ListFlowsRequest, ListFlowsPagedResponse> listFlowsPa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListFlowsRequest request =
    *       ListFlowsRequest.newBuilder()
@@ -575,8 +626,11 @@ public final UnaryCallable<ListFlowsRequest, ListFlowsResponse> listFlowsCallabl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowName name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   Flow response = flowsClient.getFlow(name);
@@ -600,8 +654,11 @@ public final Flow getFlow(FlowName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   Flow response = flowsClient.getFlow(name);
@@ -624,8 +681,11 @@ public final Flow getFlow(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowRequest request =
    *       GetFlowRequest.newBuilder()
@@ -650,8 +710,11 @@ public final Flow getFlow(GetFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowRequest request =
    *       GetFlowRequest.newBuilder()
@@ -678,8 +741,11 @@ public final UnaryCallable<GetFlowRequest, Flow> getFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   Flow flow = Flow.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -708,8 +774,11 @@ public final Flow updateFlow(Flow flow, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   UpdateFlowRequest request =
    *       UpdateFlowRequest.newBuilder()
@@ -738,8 +807,11 @@ public final Flow updateFlow(UpdateFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   UpdateFlowRequest request =
    *       UpdateFlowRequest.newBuilder()
@@ -776,8 +848,11 @@ public final UnaryCallable<UpdateFlowRequest, Flow> updateFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowName name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   flowsClient.trainFlowAsync(name).get();
@@ -813,8 +888,11 @@ public final OperationFuture<Empty, Struct> trainFlowAsync(FlowName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   flowsClient.trainFlowAsync(name).get();
@@ -849,8 +927,11 @@ public final OperationFuture<Empty, Struct> trainFlowAsync(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   TrainFlowRequest request =
    *       TrainFlowRequest.newBuilder()
@@ -886,8 +967,11 @@ public final OperationFuture<Empty, Struct> trainFlowAsync(TrainFlowRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   TrainFlowRequest request =
    *       TrainFlowRequest.newBuilder()
@@ -923,8 +1007,11 @@ public final OperationCallable<TrainFlowRequest, Empty, Struct> trainFlowOperati
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   TrainFlowRequest request =
    *       TrainFlowRequest.newBuilder()
@@ -948,8 +1035,11 @@ public final UnaryCallable<TrainFlowRequest, Operation> trainFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ValidateFlowRequest request =
    *       ValidateFlowRequest.newBuilder()
@@ -975,8 +1065,11 @@ public final FlowValidationResult validateFlow(ValidateFlowRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ValidateFlowRequest request =
    *       ValidateFlowRequest.newBuilder()
@@ -1002,8 +1095,11 @@ public final UnaryCallable<ValidateFlowRequest, FlowValidationResult> validateFl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   FlowValidationResultName name =
    *       FlowValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
@@ -1032,8 +1128,11 @@ public final FlowValidationResult getFlowValidationResult(FlowValidationResultNa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   String name =
    *       FlowValidationResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
@@ -1060,8 +1159,11 @@ public final FlowValidationResult getFlowValidationResult(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowValidationResultRequest request =
    *       GetFlowValidationResultRequest.newBuilder()
@@ -1090,8 +1192,11 @@ public final FlowValidationResult getFlowValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetFlowValidationResultRequest request =
    *       GetFlowValidationResultRequest.newBuilder()
@@ -1130,8 +1235,11 @@ public final FlowValidationResult getFlowValidationResult(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ImportFlowRequest request =
    *       ImportFlowRequest.newBuilder()
@@ -1167,8 +1275,11 @@ public final OperationFuture<ImportFlowResponse, Struct> importFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ImportFlowRequest request =
    *       ImportFlowRequest.newBuilder()
@@ -1204,8 +1315,11 @@ public final OperationFuture<ImportFlowResponse, Struct> importFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ImportFlowRequest request =
    *       ImportFlowRequest.newBuilder()
@@ -1239,8 +1353,11 @@ public final UnaryCallable<ImportFlowRequest, Operation> importFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ExportFlowRequest request =
    *       ExportFlowRequest.newBuilder()
@@ -1278,8 +1395,11 @@ public final OperationFuture<ExportFlowResponse, Struct> exportFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ExportFlowRequest request =
    *       ExportFlowRequest.newBuilder()
@@ -1317,8 +1437,11 @@ public final OperationFuture<ExportFlowResponse, Struct> exportFlowAsync(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ExportFlowRequest request =
    *       ExportFlowRequest.newBuilder()
@@ -1343,8 +1466,11 @@ public final UnaryCallable<ExportFlowRequest, Operation> exportFlowCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1373,8 +1499,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1403,8 +1532,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1439,8 +1571,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = flowsClient.getLocation(request);
@@ -1461,8 +1596,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (FlowsClient flowsClient = FlowsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = flowsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java
index e110b35d3aae..d5afe494a5fd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/FlowsSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of createFlow to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsSettings.Builder flowsSettingsBuilder = FlowsSettings.newBuilder();
  * flowsSettingsBuilder
  *     .createFlowSettings()
  *     .setRetrySettings(
- *         flowsSettingsBuilder
- *             .createFlowSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         flowsSettingsBuilder.createFlowSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * FlowsSettings flowsSettings = flowsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java
index ce998639f6fb..5e425e6ee619 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (IntentsClient intentsClient = IntentsClient.create()) {
  *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
  *   Intent response = intentsClient.getIntent(name);
@@ -84,8 +87,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings intentsSettings =
  *     IntentsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -96,8 +102,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings intentsSettings = IntentsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * IntentsClient intentsClient = IntentsClient.create(intentsSettings);
  * }</pre>
@@ -106,8 +115,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings intentsSettings =
  *     IntentsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -174,8 +186,11 @@ public IntentsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Intent element : intentsClient.listIntents(parent).iterateAll()) {
@@ -203,8 +218,11 @@ public final ListIntentsPagedResponse listIntents(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Intent element : intentsClient.listIntents(parent).iterateAll()) {
@@ -229,8 +247,11 @@ public final ListIntentsPagedResponse listIntents(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListIntentsRequest request =
    *       ListIntentsRequest.newBuilder()
@@ -260,8 +281,11 @@ public final ListIntentsPagedResponse listIntents(ListIntentsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListIntentsRequest request =
    *       ListIntentsRequest.newBuilder()
@@ -291,8 +315,11 @@ public final ListIntentsPagedResponse listIntents(ListIntentsRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListIntentsRequest request =
    *       ListIntentsRequest.newBuilder()
@@ -328,8 +355,11 @@ public final UnaryCallable<ListIntentsRequest, ListIntentsResponse> listIntentsC
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
    *   Intent response = intentsClient.getIntent(name);
@@ -353,8 +383,11 @@ public final Intent getIntent(IntentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]").toString();
    *   Intent response = intentsClient.getIntent(name);
@@ -377,8 +410,11 @@ public final Intent getIntent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetIntentRequest request =
    *       GetIntentRequest.newBuilder()
@@ -403,8 +439,11 @@ public final Intent getIntent(GetIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetIntentRequest request =
    *       GetIntentRequest.newBuilder()
@@ -431,8 +470,11 @@ public final UnaryCallable<GetIntentRequest, Intent> getIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Intent intent = Intent.newBuilder().build();
@@ -464,8 +506,11 @@ public final Intent createIntent(AgentName parent, Intent intent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Intent intent = Intent.newBuilder().build();
@@ -494,8 +539,11 @@ public final Intent createIntent(String parent, Intent intent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   CreateIntentRequest request =
    *       CreateIntentRequest.newBuilder()
@@ -524,8 +572,11 @@ public final Intent createIntent(CreateIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   CreateIntentRequest request =
    *       CreateIntentRequest.newBuilder()
@@ -553,8 +604,11 @@ public final UnaryCallable<CreateIntentRequest, Intent> createIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   Intent intent = Intent.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -583,8 +637,11 @@ public final Intent updateIntent(Intent intent, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   UpdateIntentRequest request =
    *       UpdateIntentRequest.newBuilder()
@@ -613,8 +670,11 @@ public final Intent updateIntent(UpdateIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   UpdateIntentRequest request =
    *       UpdateIntentRequest.newBuilder()
@@ -642,8 +702,11 @@ public final UnaryCallable<UpdateIntentRequest, Intent> updateIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
    *   intentsClient.deleteIntent(name);
@@ -670,8 +733,11 @@ public final void deleteIntent(IntentName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   String name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]").toString();
    *   intentsClient.deleteIntent(name);
@@ -697,8 +763,11 @@ public final void deleteIntent(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   DeleteIntentRequest request =
    *       DeleteIntentRequest.newBuilder()
@@ -725,8 +794,11 @@ public final void deleteIntent(DeleteIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   DeleteIntentRequest request =
    *       DeleteIntentRequest.newBuilder()
@@ -749,8 +821,11 @@ public final UnaryCallable<DeleteIntentRequest, Empty> deleteIntentCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -779,8 +854,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -809,8 +887,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -845,8 +926,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = intentsClient.getLocation(request);
@@ -867,8 +951,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (IntentsClient intentsClient = IntentsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = intentsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java
index 23fbbdfbed5f..1ffac3390be8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/IntentsSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsSettings.Builder intentsSettingsBuilder = IntentsSettings.newBuilder();
  * intentsSettingsBuilder
  *     .getIntentSettings()
  *     .setRetrySettings(
- *         intentsSettingsBuilder
- *             .getIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         intentsSettingsBuilder.getIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * IntentsSettings intentsSettings = intentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java
index d86c56286f66..627e0d12eb39 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (PagesClient pagesClient = PagesClient.create()) {
  *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
  *   Page response = pagesClient.getPage(name);
@@ -84,8 +87,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings pagesSettings =
  *     PagesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -96,8 +102,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings pagesSettings = PagesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * PagesClient pagesClient = PagesClient.create(pagesSettings);
  * }</pre>
@@ -106,8 +115,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings pagesSettings =
  *     PagesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -174,8 +186,11 @@ public PagesStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   for (Page element : pagesClient.listPages(parent).iterateAll()) {
@@ -201,8 +216,11 @@ public final ListPagesPagedResponse listPages(FlowName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   for (Page element : pagesClient.listPages(parent).iterateAll()) {
@@ -227,8 +245,11 @@ public final ListPagesPagedResponse listPages(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListPagesRequest request =
    *       ListPagesRequest.newBuilder()
@@ -257,8 +278,11 @@ public final ListPagesPagedResponse listPages(ListPagesRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListPagesRequest request =
    *       ListPagesRequest.newBuilder()
@@ -286,8 +310,11 @@ public final UnaryCallable<ListPagesRequest, ListPagesPagedResponse> listPagesPa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListPagesRequest request =
    *       ListPagesRequest.newBuilder()
@@ -322,8 +349,11 @@ public final UnaryCallable<ListPagesRequest, ListPagesResponse> listPagesCallabl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
    *   Page response = pagesClient.getPage(name);
@@ -348,8 +378,11 @@ public final Page getPage(PageName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String name =
    *       PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]").toString();
@@ -374,8 +407,11 @@ public final Page getPage(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetPageRequest request =
    *       GetPageRequest.newBuilder()
@@ -401,8 +437,11 @@ public final Page getPage(GetPageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetPageRequest request =
    *       GetPageRequest.newBuilder()
@@ -427,8 +466,11 @@ public final UnaryCallable<GetPageRequest, Page> getPageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   Page page = Page.newBuilder().build();
@@ -457,8 +499,11 @@ public final Page createPage(FlowName parent, Page page) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   Page page = Page.newBuilder().build();
@@ -484,8 +529,11 @@ public final Page createPage(String parent, Page page) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   CreatePageRequest request =
    *       CreatePageRequest.newBuilder()
@@ -511,8 +559,11 @@ public final Page createPage(CreatePageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   CreatePageRequest request =
    *       CreatePageRequest.newBuilder()
@@ -537,8 +588,11 @@ public final UnaryCallable<CreatePageRequest, Page> createPageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   Page page = Page.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -564,8 +618,11 @@ public final Page updatePage(Page page, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   UpdatePageRequest request =
    *       UpdatePageRequest.newBuilder()
@@ -591,8 +648,11 @@ public final Page updatePage(UpdatePageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   UpdatePageRequest request =
    *       UpdatePageRequest.newBuilder()
@@ -617,8 +677,11 @@ public final UnaryCallable<UpdatePageRequest, Page> updatePageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
    *   pagesClient.deletePage(name);
@@ -643,8 +706,11 @@ public final void deletePage(PageName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   String name =
    *       PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]").toString();
@@ -669,8 +735,11 @@ public final void deletePage(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   DeletePageRequest request =
    *       DeletePageRequest.newBuilder()
@@ -696,8 +765,11 @@ public final void deletePage(DeletePageRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   DeletePageRequest request =
    *       DeletePageRequest.newBuilder()
@@ -722,8 +794,11 @@ public final UnaryCallable<DeletePageRequest, Empty> deletePageCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -752,8 +827,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -782,8 +860,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -818,8 +899,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = pagesClient.getLocation(request);
@@ -840,8 +924,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (PagesClient pagesClient = PagesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = pagesClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java
index e9fe66b6cd5e..b0f1304a9b62 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/PagesSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getPage to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesSettings.Builder pagesSettingsBuilder = PagesSettings.newBuilder();
  * pagesSettingsBuilder
  *     .getPageSettings()
  *     .setRetrySettings(
- *         pagesSettingsBuilder
- *             .getPageSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         pagesSettingsBuilder.getPageSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * PagesSettings pagesSettings = pagesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java
index 69bc34d632b6..d7a801d0848a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SecuritySettingsServiceClient securitySettingsServiceClient =
  *     SecuritySettingsServiceClient.create()) {
  *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -88,8 +91,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings securitySettingsServiceSettings =
  *     SecuritySettingsServiceSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -101,8 +107,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings securitySettingsServiceSettings =
  *     SecuritySettingsServiceSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SecuritySettingsServiceClient securitySettingsServiceClient =
@@ -113,8 +122,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings securitySettingsServiceSettings =
  *     SecuritySettingsServiceSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -185,8 +197,11 @@ public SecuritySettingsServiceStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -219,8 +234,11 @@ public final SecuritySettings createSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
@@ -253,8 +271,11 @@ public final SecuritySettings createSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   CreateSecuritySettingsRequest request =
@@ -280,8 +301,11 @@ public final SecuritySettings createSecuritySettings(CreateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   CreateSecuritySettingsRequest request =
@@ -310,8 +334,11 @@ public final SecuritySettings createSecuritySettings(CreateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   SecuritySettingsName name =
@@ -341,8 +368,11 @@ public final SecuritySettings getSecuritySettings(SecuritySettingsName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String name =
@@ -370,8 +400,11 @@ public final SecuritySettings getSecuritySettings(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetSecuritySettingsRequest request =
@@ -400,8 +433,11 @@ public final SecuritySettings getSecuritySettings(GetSecuritySettingsRequest req
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetSecuritySettingsRequest request =
@@ -429,8 +465,11 @@ public final SecuritySettings getSecuritySettings(GetSecuritySettingsRequest req
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   SecuritySettings securitySettings = SecuritySettings.newBuilder().build();
@@ -463,8 +502,11 @@ public final SecuritySettings updateSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   UpdateSecuritySettingsRequest request =
@@ -490,8 +532,11 @@ public final SecuritySettings updateSecuritySettings(UpdateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   UpdateSecuritySettingsRequest request =
@@ -518,8 +563,11 @@ public final SecuritySettings updateSecuritySettings(UpdateSecuritySettingsReque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -549,8 +597,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(LocationName
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String parent = LocationName.of("[PROJECT]", "[LOCATION]").toString();
@@ -578,8 +629,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(String paren
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListSecuritySettingsRequest request =
@@ -610,8 +664,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListSecuritySettingsRequest request =
@@ -641,8 +698,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListSecuritySettingsRequest request =
@@ -679,8 +739,11 @@ public final ListSecuritySettingsPagedResponse listSecuritySettings(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   SecuritySettingsName name =
@@ -710,8 +773,11 @@ public final void deleteSecuritySettings(SecuritySettingsName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   String name =
@@ -739,8 +805,11 @@ public final void deleteSecuritySettings(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   DeleteSecuritySettingsRequest request =
@@ -767,8 +836,11 @@ public final void deleteSecuritySettings(DeleteSecuritySettingsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   DeleteSecuritySettingsRequest request =
@@ -796,8 +868,11 @@ public final void deleteSecuritySettings(DeleteSecuritySettingsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListLocationsRequest request =
@@ -827,8 +902,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListLocationsRequest request =
@@ -859,8 +937,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   ListLocationsRequest request =
@@ -897,8 +978,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
@@ -920,8 +1004,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SecuritySettingsServiceClient securitySettingsServiceClient =
    *     SecuritySettingsServiceClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java
index c7c79b84380a..73ec05a73f82 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SecuritySettingsServiceSettings.java
@@ -59,8 +59,11 @@
  * <p>For example, to set the total timeout of createSecuritySettings to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceSettings.Builder securitySettingsServiceSettingsBuilder =
  *     SecuritySettingsServiceSettings.newBuilder();
  * securitySettingsServiceSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java
index dcc7a3c90409..8634e508e9a8 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesClient.java
@@ -48,8 +48,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
  *   SessionEntityTypeName name =
  *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -88,8 +91,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings sessionEntityTypesSettings =
  *     SessionEntityTypesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -101,8 +107,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings sessionEntityTypesSettings =
  *     SessionEntityTypesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SessionEntityTypesClient sessionEntityTypesClient =
@@ -113,8 +122,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings sessionEntityTypesSettings =
  *     SessionEntityTypesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -184,8 +196,11 @@ public SessionEntityTypesStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionName parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -219,8 +234,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(SessionN
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -253,8 +271,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(String p
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListSessionEntityTypesRequest request =
    *       ListSessionEntityTypesRequest.newBuilder()
@@ -287,8 +308,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListSessionEntityTypesRequest request =
    *       ListSessionEntityTypesRequest.newBuilder()
@@ -320,8 +344,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListSessionEntityTypesRequest request =
    *       ListSessionEntityTypesRequest.newBuilder()
@@ -360,8 +387,11 @@ public final ListSessionEntityTypesPagedResponse listSessionEntityTypes(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionEntityTypeName name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -393,8 +423,11 @@ public final SessionEntityType getSessionEntityType(SessionEntityTypeName name)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -425,8 +458,11 @@ public final SessionEntityType getSessionEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetSessionEntityTypeRequest request =
    *       GetSessionEntityTypeRequest.newBuilder()
@@ -453,8 +489,11 @@ public final SessionEntityType getSessionEntityType(GetSessionEntityTypeRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetSessionEntityTypeRequest request =
    *       GetSessionEntityTypeRequest.newBuilder()
@@ -482,8 +521,11 @@ public final SessionEntityType getSessionEntityType(GetSessionEntityTypeRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionName parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -519,8 +561,11 @@ public final SessionEntityType createSessionEntityType(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String parent =
    *       SessionName.ofProjectLocationAgentSessionName(
@@ -557,8 +602,11 @@ public final SessionEntityType createSessionEntityType(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   CreateSessionEntityTypeRequest request =
    *       CreateSessionEntityTypeRequest.newBuilder()
@@ -586,8 +634,11 @@ public final SessionEntityType createSessionEntityType(CreateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   CreateSessionEntityTypeRequest request =
    *       CreateSessionEntityTypeRequest.newBuilder()
@@ -616,8 +667,11 @@ public final SessionEntityType createSessionEntityType(CreateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionEntityType sessionEntityType = SessionEntityType.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -653,8 +707,11 @@ public final SessionEntityType updateSessionEntityType(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   UpdateSessionEntityTypeRequest request =
    *       UpdateSessionEntityTypeRequest.newBuilder()
@@ -679,8 +736,11 @@ public final SessionEntityType updateSessionEntityType(UpdateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   UpdateSessionEntityTypeRequest request =
    *       UpdateSessionEntityTypeRequest.newBuilder()
@@ -706,8 +766,11 @@ public final SessionEntityType updateSessionEntityType(UpdateSessionEntityTypeRe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   SessionEntityTypeName name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -740,8 +803,11 @@ public final void deleteSessionEntityType(SessionEntityTypeName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   String name =
    *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -773,8 +839,11 @@ public final void deleteSessionEntityType(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   DeleteSessionEntityTypeRequest request =
    *       DeleteSessionEntityTypeRequest.newBuilder()
@@ -801,8 +870,11 @@ public final void deleteSessionEntityType(DeleteSessionEntityTypeRequest request
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   DeleteSessionEntityTypeRequest request =
    *       DeleteSessionEntityTypeRequest.newBuilder()
@@ -830,8 +902,11 @@ public final void deleteSessionEntityType(DeleteSessionEntityTypeRequest request
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -860,8 +935,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -891,8 +969,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -928,8 +1009,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = sessionEntityTypesClient.getLocation(request);
@@ -950,8 +1034,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future =
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java
index f2120ab17049..8bd1b5086cac 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionEntityTypesSettings.java
@@ -59,8 +59,11 @@
  * <p>For example, to set the total timeout of getSessionEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesSettings.Builder sessionEntityTypesSettingsBuilder =
  *     SessionEntityTypesSettings.newBuilder();
  * sessionEntityTypesSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java
index 7d506c861d33..a7cae5703ea7 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsClient.java
@@ -48,8 +48,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionsClient sessionsClient = SessionsClient.create()) {
  *   DetectIntentRequest request =
  *       DetectIntentRequest.newBuilder()
@@ -94,8 +97,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings sessionsSettings =
  *     SessionsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -106,8 +112,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings sessionsSettings =
  *     SessionsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * SessionsClient sessionsClient = SessionsClient.create(sessionsSettings);
@@ -117,8 +126,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings sessionsSettings =
  *     SessionsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -190,8 +202,11 @@ public SessionsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   DetectIntentRequest request =
    *       DetectIntentRequest.newBuilder()
@@ -226,8 +241,11 @@ public final DetectIntentResponse detectIntent(DetectIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   DetectIntentRequest request =
    *       DetectIntentRequest.newBuilder()
@@ -262,8 +280,11 @@ public final UnaryCallable<DetectIntentRequest, DetectIntentResponse> detectInte
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   BidiStream<StreamingDetectIntentRequest, StreamingDetectIntentResponse> bidiStream =
    *       sessionsClient.streamingDetectIntentCallable().call();
@@ -297,8 +318,11 @@ public final UnaryCallable<DetectIntentRequest, DetectIntentResponse> detectInte
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   MatchIntentRequest request =
    *       MatchIntentRequest.newBuilder()
@@ -327,8 +351,11 @@ public final MatchIntentResponse matchIntent(MatchIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   MatchIntentRequest request =
    *       MatchIntentRequest.newBuilder()
@@ -361,8 +388,11 @@ public final UnaryCallable<MatchIntentRequest, MatchIntentResponse> matchIntentC
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   FulfillIntentRequest request =
    *       FulfillIntentRequest.newBuilder()
@@ -392,8 +422,11 @@ public final FulfillIntentResponse fulfillIntent(FulfillIntentRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   FulfillIntentRequest request =
    *       FulfillIntentRequest.newBuilder()
@@ -419,8 +452,11 @@ public final UnaryCallable<FulfillIntentRequest, FulfillIntentResponse> fulfillI
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -449,8 +485,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -479,8 +518,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -515,8 +557,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = sessionsClient.getLocation(request);
@@ -537,8 +582,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (SessionsClient sessionsClient = SessionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = sessionsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java
index 8a0aede53dbf..4de1a8e03aaa 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/SessionsSettings.java
@@ -58,16 +58,16 @@
  * <p>For example, to set the total timeout of detectIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
  * sessionsSettingsBuilder
  *     .detectIntentSettings()
  *     .setRetrySettings(
- *         sessionsSettingsBuilder
- *             .detectIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         sessionsSettingsBuilder.detectIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java
index 89ed4b8eb3ac..be33b6ca9827 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesClient.java
@@ -53,8 +53,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   testCasesClient.batchDeleteTestCases(parent);
@@ -90,8 +93,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings testCasesSettings =
  *     TestCasesSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -102,8 +108,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings testCasesSettings =
  *     TestCasesSettings.newBuilder().setEndpoint(myEndpoint).build();
  * TestCasesClient testCasesClient = TestCasesClient.create(testCasesSettings);
@@ -113,8 +122,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings testCasesSettings =
  *     TestCasesSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -206,8 +218,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (TestCase element : testCasesClient.listTestCases(parent).iterateAll()) {
@@ -235,8 +250,11 @@ public final ListTestCasesPagedResponse listTestCases(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (TestCase element : testCasesClient.listTestCases(parent).iterateAll()) {
@@ -261,8 +279,11 @@ public final ListTestCasesPagedResponse listTestCases(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCasesRequest request =
    *       ListTestCasesRequest.newBuilder()
@@ -290,8 +311,11 @@ public final ListTestCasesPagedResponse listTestCases(ListTestCasesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCasesRequest request =
    *       ListTestCasesRequest.newBuilder()
@@ -319,8 +343,11 @@ public final ListTestCasesPagedResponse listTestCases(ListTestCasesRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCasesRequest request =
    *       ListTestCasesRequest.newBuilder()
@@ -354,8 +381,11 @@ public final UnaryCallable<ListTestCasesRequest, ListTestCasesResponse> listTest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   testCasesClient.batchDeleteTestCases(parent);
@@ -381,8 +411,11 @@ public final void batchDeleteTestCases(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   testCasesClient.batchDeleteTestCases(parent);
@@ -406,8 +439,11 @@ public final void batchDeleteTestCases(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchDeleteTestCasesRequest request =
    *       BatchDeleteTestCasesRequest.newBuilder()
@@ -432,8 +468,11 @@ public final void batchDeleteTestCases(BatchDeleteTestCasesRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchDeleteTestCasesRequest request =
    *       BatchDeleteTestCasesRequest.newBuilder()
@@ -457,8 +496,11 @@ public final UnaryCallable<BatchDeleteTestCasesRequest, Empty> batchDeleteTestCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCaseName name = TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]");
    *   TestCase response = testCasesClient.getTestCase(name);
@@ -483,8 +525,11 @@ public final TestCase getTestCase(TestCaseName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String name = TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]").toString();
    *   TestCase response = testCasesClient.getTestCase(name);
@@ -508,8 +553,11 @@ public final TestCase getTestCase(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseRequest request =
    *       GetTestCaseRequest.newBuilder()
@@ -534,8 +582,11 @@ public final TestCase getTestCase(GetTestCaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseRequest request =
    *       GetTestCaseRequest.newBuilder()
@@ -559,8 +610,11 @@ public final UnaryCallable<GetTestCaseRequest, TestCase> getTestCaseCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   TestCase testCase = TestCase.newBuilder().build();
@@ -589,8 +643,11 @@ public final TestCase createTestCase(AgentName parent, TestCase testCase) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   TestCase testCase = TestCase.newBuilder().build();
@@ -616,8 +673,11 @@ public final TestCase createTestCase(String parent, TestCase testCase) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CreateTestCaseRequest request =
    *       CreateTestCaseRequest.newBuilder()
@@ -642,8 +702,11 @@ public final TestCase createTestCase(CreateTestCaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CreateTestCaseRequest request =
    *       CreateTestCaseRequest.newBuilder()
@@ -667,8 +730,11 @@ public final UnaryCallable<CreateTestCaseRequest, TestCase> createTestCaseCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCase testCase = TestCase.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -696,8 +762,11 @@ public final TestCase updateTestCase(TestCase testCase, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   UpdateTestCaseRequest request =
    *       UpdateTestCaseRequest.newBuilder()
@@ -722,8 +791,11 @@ public final TestCase updateTestCase(UpdateTestCaseRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   UpdateTestCaseRequest request =
    *       UpdateTestCaseRequest.newBuilder()
@@ -754,8 +826,11 @@ public final UnaryCallable<UpdateTestCaseRequest, TestCase> updateTestCaseCallab
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   RunTestCaseRequest request =
    *       RunTestCaseRequest.newBuilder()
@@ -791,8 +866,11 @@ public final OperationFuture<RunTestCaseResponse, RunTestCaseMetadata> runTestCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   RunTestCaseRequest request =
    *       RunTestCaseRequest.newBuilder()
@@ -828,8 +906,11 @@ public final OperationFuture<RunTestCaseResponse, RunTestCaseMetadata> runTestCa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   RunTestCaseRequest request =
    *       RunTestCaseRequest.newBuilder()
@@ -865,8 +946,11 @@ public final UnaryCallable<RunTestCaseRequest, Operation> runTestCaseCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchRunTestCasesRequest request =
    *       BatchRunTestCasesRequest.newBuilder()
@@ -904,8 +988,11 @@ public final UnaryCallable<RunTestCaseRequest, Operation> runTestCaseCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchRunTestCasesRequest request =
    *       BatchRunTestCasesRequest.newBuilder()
@@ -944,8 +1031,11 @@ public final UnaryCallable<RunTestCaseRequest, Operation> runTestCaseCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   BatchRunTestCasesRequest request =
    *       BatchRunTestCasesRequest.newBuilder()
@@ -972,8 +1062,11 @@ public final UnaryCallable<BatchRunTestCasesRequest, Operation> batchRunTestCase
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CalculateCoverageRequest request =
    *       CalculateCoverageRequest.newBuilder()
@@ -997,8 +1090,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   CalculateCoverageRequest request =
    *       CalculateCoverageRequest.newBuilder()
@@ -1034,8 +1130,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ImportTestCasesRequest request =
    *       ImportTestCasesRequest.newBuilder()
@@ -1071,8 +1170,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ImportTestCasesRequest request =
    *       ImportTestCasesRequest.newBuilder()
@@ -1109,8 +1211,11 @@ public final CalculateCoverageResponse calculateCoverage(CalculateCoverageReques
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ImportTestCasesRequest request =
    *       ImportTestCasesRequest.newBuilder()
@@ -1143,8 +1248,11 @@ public final UnaryCallable<ImportTestCasesRequest, Operation> importTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ExportTestCasesRequest request =
    *       ExportTestCasesRequest.newBuilder()
@@ -1180,8 +1288,11 @@ public final UnaryCallable<ImportTestCasesRequest, Operation> importTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ExportTestCasesRequest request =
    *       ExportTestCasesRequest.newBuilder()
@@ -1218,8 +1329,11 @@ public final UnaryCallable<ImportTestCasesRequest, Operation> importTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ExportTestCasesRequest request =
    *       ExportTestCasesRequest.newBuilder()
@@ -1243,8 +1357,11 @@ public final UnaryCallable<ExportTestCasesRequest, Operation> exportTestCasesCal
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCaseName parent = TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]");
    *   for (TestCaseResult element : testCasesClient.listTestCaseResults(parent).iterateAll()) {
@@ -1274,8 +1391,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(TestCaseName p
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String parent =
    *       TestCaseName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]").toString();
@@ -1304,8 +1424,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(String parent)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCaseResultsRequest request =
    *       ListTestCaseResultsRequest.newBuilder()
@@ -1336,8 +1459,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCaseResultsRequest request =
    *       ListTestCaseResultsRequest.newBuilder()
@@ -1368,8 +1494,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListTestCaseResultsRequest request =
    *       ListTestCaseResultsRequest.newBuilder()
@@ -1407,8 +1536,11 @@ public final ListTestCaseResultsPagedResponse listTestCaseResults(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   TestCaseResultName name =
    *       TestCaseResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]", "[RESULT]");
@@ -1436,8 +1568,11 @@ public final TestCaseResult getTestCaseResult(TestCaseResultName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   String name =
    *       TestCaseResultName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[TEST_CASE]", "[RESULT]")
@@ -1463,8 +1598,11 @@ public final TestCaseResult getTestCaseResult(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseResultRequest request =
    *       GetTestCaseResultRequest.newBuilder()
@@ -1491,8 +1629,11 @@ public final TestCaseResult getTestCaseResult(GetTestCaseResultRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetTestCaseResultRequest request =
    *       GetTestCaseResultRequest.newBuilder()
@@ -1519,8 +1660,11 @@ public final UnaryCallable<GetTestCaseResultRequest, TestCaseResult> getTestCase
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1549,8 +1693,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1579,8 +1726,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1615,8 +1765,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = testCasesClient.getLocation(request);
@@ -1637,8 +1790,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = testCasesClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java
index 4ab151f46f61..6461bc09eabc 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TestCasesSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of batchDeleteTestCases to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesSettings.Builder testCasesSettingsBuilder = TestCasesSettings.newBuilder();
  * testCasesSettingsBuilder
  *     .batchDeleteTestCasesSettings()
  *     .setRetrySettings(
- *         testCasesSettingsBuilder
- *             .batchDeleteTestCasesSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         testCasesSettingsBuilder.batchDeleteTestCasesSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * TestCasesSettings testCasesSettings = testCasesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java
index c6049fd906ad..3453d0f4d759 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsClient.java
@@ -48,8 +48,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
  *     TransitionRouteGroupsClient.create()) {
  *   TransitionRouteGroupName name =
@@ -89,8 +92,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings transitionRouteGroupsSettings =
  *     TransitionRouteGroupsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -102,8 +108,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings transitionRouteGroupsSettings =
  *     TransitionRouteGroupsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * TransitionRouteGroupsClient transitionRouteGroupsClient =
@@ -114,8 +123,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings transitionRouteGroupsSettings =
  *     TransitionRouteGroupsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -185,8 +197,11 @@ public TransitionRouteGroupsStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
@@ -217,8 +232,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(Fl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
@@ -247,8 +265,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(St
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListTransitionRouteGroupsRequest request =
@@ -280,8 +301,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListTransitionRouteGroupsRequest request =
@@ -313,8 +337,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListTransitionRouteGroupsRequest request =
@@ -353,8 +380,11 @@ public final ListTransitionRouteGroupsPagedResponse listTransitionRouteGroups(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   TransitionRouteGroupName name =
@@ -386,8 +416,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(TransitionRouteGroupNa
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String name =
@@ -418,8 +451,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetTransitionRouteGroupRequest request =
@@ -454,8 +490,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetTransitionRouteGroupRequest request =
@@ -493,8 +532,11 @@ public final TransitionRouteGroup getTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
@@ -532,8 +574,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
@@ -571,8 +616,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   CreateTransitionRouteGroupRequest request =
@@ -605,8 +653,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   CreateTransitionRouteGroupRequest request =
@@ -638,8 +689,11 @@ public final TransitionRouteGroup createTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   TransitionRouteGroup transitionRouteGroup = TransitionRouteGroup.newBuilder().build();
@@ -674,8 +728,11 @@ public final TransitionRouteGroup updateTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   UpdateTransitionRouteGroupRequest request =
@@ -708,8 +765,11 @@ public final TransitionRouteGroup updateTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   UpdateTransitionRouteGroupRequest request =
@@ -741,8 +801,11 @@ public final TransitionRouteGroup updateTransitionRouteGroup(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   TransitionRouteGroupName name =
@@ -777,8 +840,11 @@ public final void deleteTransitionRouteGroup(TransitionRouteGroupName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   String name =
@@ -812,8 +878,11 @@ public final void deleteTransitionRouteGroup(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   DeleteTransitionRouteGroupRequest request =
@@ -850,8 +919,11 @@ public final void deleteTransitionRouteGroup(DeleteTransitionRouteGroupRequest r
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   DeleteTransitionRouteGroupRequest request =
@@ -885,8 +957,11 @@ public final void deleteTransitionRouteGroup(DeleteTransitionRouteGroupRequest r
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListLocationsRequest request =
@@ -916,8 +991,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListLocationsRequest request =
@@ -948,8 +1026,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   ListLocationsRequest request =
@@ -986,8 +1067,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
@@ -1009,8 +1093,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
    *     TransitionRouteGroupsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java
index b02f79fe06a2..74b445d422db 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/TransitionRouteGroupsSettings.java
@@ -59,8 +59,11 @@
  * <p>For example, to set the total timeout of getTransitionRouteGroup to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsSettings.Builder transitionRouteGroupsSettingsBuilder =
  *     TransitionRouteGroupsSettings.newBuilder();
  * transitionRouteGroupsSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java
index 1655177fa2fa..8a8ff257cf07 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsClient.java
@@ -52,8 +52,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (VersionsClient versionsClient = VersionsClient.create()) {
  *   VersionName name =
  *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -90,8 +93,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings versionsSettings =
  *     VersionsSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -102,8 +108,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings versionsSettings =
  *     VersionsSettings.newBuilder().setEndpoint(myEndpoint).build();
  * VersionsClient versionsClient = VersionsClient.create(versionsSettings);
@@ -113,8 +122,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings versionsSettings =
  *     VersionsSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -207,8 +219,11 @@ public final OperationsClient getHttpJsonOperationsClient() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   for (Version element : versionsClient.listVersions(parent).iterateAll()) {
@@ -238,8 +253,11 @@ public final ListVersionsPagedResponse listVersions(FlowName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   for (Version element : versionsClient.listVersions(parent).iterateAll()) {
@@ -266,8 +284,11 @@ public final ListVersionsPagedResponse listVersions(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListVersionsRequest request =
    *       ListVersionsRequest.newBuilder()
@@ -296,8 +317,11 @@ public final ListVersionsPagedResponse listVersions(ListVersionsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListVersionsRequest request =
    *       ListVersionsRequest.newBuilder()
@@ -326,8 +350,11 @@ public final ListVersionsPagedResponse listVersions(ListVersionsRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListVersionsRequest request =
    *       ListVersionsRequest.newBuilder()
@@ -361,8 +388,11 @@ public final UnaryCallable<ListVersionsRequest, ListVersionsResponse> listVersio
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -388,8 +418,11 @@ public final Version getVersion(VersionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -414,8 +447,11 @@ public final Version getVersion(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetVersionRequest request =
    *       GetVersionRequest.newBuilder()
@@ -441,8 +477,11 @@ public final Version getVersion(GetVersionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetVersionRequest request =
    *       GetVersionRequest.newBuilder()
@@ -476,8 +515,11 @@ public final UnaryCallable<GetVersionRequest, Version> getVersionCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   FlowName parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]");
    *   Version version = Version.newBuilder().build();
@@ -517,8 +559,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String parent = FlowName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]").toString();
    *   Version version = Version.newBuilder().build();
@@ -555,8 +600,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CreateVersionRequest request =
    *       CreateVersionRequest.newBuilder()
@@ -591,8 +639,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CreateVersionRequest request =
    *       CreateVersionRequest.newBuilder()
@@ -627,8 +678,11 @@ public final OperationFuture<Version, CreateVersionOperationMetadata> createVers
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CreateVersionRequest request =
    *       CreateVersionRequest.newBuilder()
@@ -652,8 +706,11 @@ public final UnaryCallable<CreateVersionRequest, Operation> createVersionCallabl
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   Version version = Version.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -679,8 +736,11 @@ public final Version updateVersion(Version version, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   UpdateVersionRequest request =
    *       UpdateVersionRequest.newBuilder()
@@ -705,8 +765,11 @@ public final Version updateVersion(UpdateVersionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   UpdateVersionRequest request =
    *       UpdateVersionRequest.newBuilder()
@@ -730,8 +793,11 @@ public final UnaryCallable<UpdateVersionRequest, Version> updateVersionCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -757,8 +823,11 @@ public final void deleteVersion(VersionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -783,8 +852,11 @@ public final void deleteVersion(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   DeleteVersionRequest request =
    *       DeleteVersionRequest.newBuilder()
@@ -810,8 +882,11 @@ public final void deleteVersion(DeleteVersionRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   DeleteVersionRequest request =
    *       DeleteVersionRequest.newBuilder()
@@ -845,8 +920,11 @@ public final UnaryCallable<DeleteVersionRequest, Empty> deleteVersionCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -881,8 +959,11 @@ public final OperationFuture<Empty, Struct> loadVersionAsync(VersionName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String name =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -916,8 +997,11 @@ public final OperationFuture<Empty, Struct> loadVersionAsync(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   LoadVersionRequest request =
    *       LoadVersionRequest.newBuilder()
@@ -953,8 +1037,11 @@ public final OperationFuture<Empty, Struct> loadVersionAsync(LoadVersionRequest
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   LoadVersionRequest request =
    *       LoadVersionRequest.newBuilder()
@@ -990,8 +1077,11 @@ public final OperationCallable<LoadVersionRequest, Empty, Struct> loadVersionOpe
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   LoadVersionRequest request =
    *       LoadVersionRequest.newBuilder()
@@ -1017,8 +1107,11 @@ public final UnaryCallable<LoadVersionRequest, Operation> loadVersionCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   VersionName baseVersion =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -1047,8 +1140,11 @@ public final CompareVersionsResponse compareVersions(VersionName baseVersion) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   String baseVersion =
    *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]").toString();
@@ -1075,8 +1171,11 @@ public final CompareVersionsResponse compareVersions(String baseVersion) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CompareVersionsRequest request =
    *       CompareVersionsRequest.newBuilder()
@@ -1106,8 +1205,11 @@ public final CompareVersionsResponse compareVersions(CompareVersionsRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   CompareVersionsRequest request =
    *       CompareVersionsRequest.newBuilder()
@@ -1138,8 +1240,11 @@ public final CompareVersionsResponse compareVersions(CompareVersionsRequest requ
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1168,8 +1273,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1198,8 +1306,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -1234,8 +1345,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = versionsClient.getLocation(request);
@@ -1256,8 +1370,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (VersionsClient versionsClient = VersionsClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = versionsClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java
index 65b6a3a7c355..0c69850d8629 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/VersionsSettings.java
@@ -62,16 +62,16 @@
  * <p>For example, to set the total timeout of getVersion to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsSettings.Builder versionsSettingsBuilder = VersionsSettings.newBuilder();
  * versionsSettingsBuilder
  *     .getVersionSettings()
  *     .setRetrySettings(
- *         versionsSettingsBuilder
- *             .getVersionSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         versionsSettingsBuilder.getVersionSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * VersionsSettings versionsSettings = versionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java
index 9a89ef8b1e51..41476aca33d0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksClient.java
@@ -47,8 +47,11 @@
  * calls that map to API methods. Sample code to get started:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
  *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
  *   Webhook response = webhooksClient.getWebhook(name);
@@ -84,8 +87,11 @@
  * <p>To customize credentials:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings webhooksSettings =
  *     WebhooksSettings.newBuilder()
  *         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
@@ -96,8 +102,11 @@
  * <p>To customize the endpoint:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings webhooksSettings =
  *     WebhooksSettings.newBuilder().setEndpoint(myEndpoint).build();
  * WebhooksClient webhooksClient = WebhooksClient.create(webhooksSettings);
@@ -107,8 +116,11 @@
  * the wire:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings webhooksSettings =
  *     WebhooksSettings.newBuilder()
  *         .setTransportChannelProvider(
@@ -175,8 +187,11 @@ public WebhooksStub getStub() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   for (Webhook element : webhooksClient.listWebhooks(parent).iterateAll()) {
@@ -204,8 +219,11 @@ public final ListWebhooksPagedResponse listWebhooks(AgentName parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   for (Webhook element : webhooksClient.listWebhooks(parent).iterateAll()) {
@@ -230,8 +248,11 @@ public final ListWebhooksPagedResponse listWebhooks(String parent) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListWebhooksRequest request =
    *       ListWebhooksRequest.newBuilder()
@@ -259,8 +280,11 @@ public final ListWebhooksPagedResponse listWebhooks(ListWebhooksRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListWebhooksRequest request =
    *       ListWebhooksRequest.newBuilder()
@@ -288,8 +312,11 @@ public final ListWebhooksPagedResponse listWebhooks(ListWebhooksRequest request)
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListWebhooksRequest request =
    *       ListWebhooksRequest.newBuilder()
@@ -323,8 +350,11 @@ public final UnaryCallable<ListWebhooksRequest, ListWebhooksResponse> listWebhoo
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
    *   Webhook response = webhooksClient.getWebhook(name);
@@ -348,8 +378,11 @@ public final Webhook getWebhook(WebhookName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]").toString();
    *   Webhook response = webhooksClient.getWebhook(name);
@@ -372,8 +405,11 @@ public final Webhook getWebhook(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetWebhookRequest request =
    *       GetWebhookRequest.newBuilder()
@@ -397,8 +433,11 @@ public final Webhook getWebhook(GetWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetWebhookRequest request =
    *       GetWebhookRequest.newBuilder()
@@ -421,8 +460,11 @@ public final UnaryCallable<GetWebhookRequest, Webhook> getWebhookCallable() {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
    *   Webhook webhook = Webhook.newBuilder().build();
@@ -451,8 +493,11 @@ public final Webhook createWebhook(AgentName parent, Webhook webhook) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]").toString();
    *   Webhook webhook = Webhook.newBuilder().build();
@@ -478,8 +523,11 @@ public final Webhook createWebhook(String parent, Webhook webhook) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   CreateWebhookRequest request =
    *       CreateWebhookRequest.newBuilder()
@@ -504,8 +552,11 @@ public final Webhook createWebhook(CreateWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   CreateWebhookRequest request =
    *       CreateWebhookRequest.newBuilder()
@@ -529,8 +580,11 @@ public final UnaryCallable<CreateWebhookRequest, Webhook> createWebhookCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   Webhook webhook = Webhook.newBuilder().build();
    *   FieldMask updateMask = FieldMask.newBuilder().build();
@@ -556,8 +610,11 @@ public final Webhook updateWebhook(Webhook webhook, FieldMask updateMask) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   UpdateWebhookRequest request =
    *       UpdateWebhookRequest.newBuilder()
@@ -582,8 +639,11 @@ public final Webhook updateWebhook(UpdateWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   UpdateWebhookRequest request =
    *       UpdateWebhookRequest.newBuilder()
@@ -607,8 +667,11 @@ public final UnaryCallable<UpdateWebhookRequest, Webhook> updateWebhookCallable(
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
    *   webhooksClient.deleteWebhook(name);
@@ -632,8 +695,11 @@ public final void deleteWebhook(WebhookName name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   String name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]").toString();
    *   webhooksClient.deleteWebhook(name);
@@ -656,8 +722,11 @@ public final void deleteWebhook(String name) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   DeleteWebhookRequest request =
    *       DeleteWebhookRequest.newBuilder()
@@ -682,8 +751,11 @@ public final void deleteWebhook(DeleteWebhookRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   DeleteWebhookRequest request =
    *       DeleteWebhookRequest.newBuilder()
@@ -707,8 +779,11 @@ public final UnaryCallable<DeleteWebhookRequest, Empty> deleteWebhookCallable()
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -737,8 +812,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -767,8 +845,11 @@ public final ListLocationsPagedResponse listLocations(ListLocationsRequest reque
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   ListLocationsRequest request =
    *       ListLocationsRequest.newBuilder()
@@ -803,8 +884,11 @@ public final UnaryCallable<ListLocationsRequest, ListLocationsResponse> listLoca
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   Location response = webhooksClient.getLocation(request);
@@ -825,8 +909,11 @@ public final Location getLocation(GetLocationRequest request) {
    * <p>Sample code:
    *
    * <pre>{@code
-   * // This snippet has been automatically generated for illustrative purposes only.
-   * // It may require modifications to work in your environment.
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
    *   GetLocationRequest request = GetLocationRequest.newBuilder().setName("name3373707").build();
    *   ApiFuture<Location> future = webhooksClient.getLocationCallable().futureCall(request);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java
index 0fe95624a18f..86142e7c7be0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/WebhooksSettings.java
@@ -59,16 +59,16 @@
  * <p>For example, to set the total timeout of getWebhook to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksSettings.Builder webhooksSettingsBuilder = WebhooksSettings.newBuilder();
  * webhooksSettingsBuilder
  *     .getWebhookSettings()
  *     .setRetrySettings(
- *         webhooksSettingsBuilder
- *             .getWebhookSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         webhooksSettingsBuilder.getWebhookSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * WebhooksSettings webhooksSettings = webhooksSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/package-info.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/package-info.java
index 604a75e7faf3..5a681794dc34 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/package-info.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/package-info.java
@@ -26,8 +26,11 @@
  * <p>Sample for AgentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (AgentsClient agentsClient = AgentsClient.create()) {
  *   AgentName name = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Agent response = agentsClient.getAgent(name);
@@ -42,8 +45,11 @@
  * <p>Sample for ChangelogsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ChangelogsClient changelogsClient = ChangelogsClient.create()) {
  *   ChangelogName name = ChangelogName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[CHANGELOG]");
  *   Changelog response = changelogsClient.getChangelog(name);
@@ -58,8 +64,11 @@
  * <p>Sample for DeploymentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (DeploymentsClient deploymentsClient = DeploymentsClient.create()) {
  *   DeploymentName name =
  *       DeploymentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[DEPLOYMENT]");
@@ -75,8 +84,11 @@
  * <p>Sample for EntityTypesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
  *   EntityTypeName name =
  *       EntityTypeName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENTITY_TYPE]");
@@ -92,8 +104,11 @@
  * <p>Sample for EnvironmentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (EnvironmentsClient environmentsClient = EnvironmentsClient.create()) {
  *   EnvironmentName name =
  *       EnvironmentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]");
@@ -109,8 +124,11 @@
  * <p>Sample for ExperimentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (ExperimentsClient experimentsClient = ExperimentsClient.create()) {
  *   ExperimentName name =
  *       ExperimentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[ENVIRONMENT]", "[EXPERIMENT]");
@@ -125,8 +143,11 @@
  * <p>Sample for FlowsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (FlowsClient flowsClient = FlowsClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   Flow flow = Flow.newBuilder().build();
@@ -142,8 +163,11 @@
  * <p>Sample for IntentsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (IntentsClient intentsClient = IntentsClient.create()) {
  *   IntentName name = IntentName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[INTENT]");
  *   Intent response = intentsClient.getIntent(name);
@@ -157,8 +181,11 @@
  * <p>Sample for PagesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (PagesClient pagesClient = PagesClient.create()) {
  *   PageName name = PageName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[PAGE]");
  *   Page response = pagesClient.getPage(name);
@@ -172,8 +199,11 @@
  * <p>Sample for SecuritySettingsServiceClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SecuritySettingsServiceClient securitySettingsServiceClient =
  *     SecuritySettingsServiceClient.create()) {
  *   LocationName parent = LocationName.of("[PROJECT]", "[LOCATION]");
@@ -192,8 +222,11 @@
  * <p>Sample for SessionsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionsClient sessionsClient = SessionsClient.create()) {
  *   DetectIntentRequest request =
  *       DetectIntentRequest.newBuilder()
@@ -217,8 +250,11 @@
  * <p>Sample for SessionEntityTypesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (SessionEntityTypesClient sessionEntityTypesClient = SessionEntityTypesClient.create()) {
  *   SessionEntityTypeName name =
  *       SessionEntityTypeName.ofProjectLocationAgentSessionEntityTypeName(
@@ -236,8 +272,11 @@
  * <p>Sample for TestCasesClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TestCasesClient testCasesClient = TestCasesClient.create()) {
  *   AgentName parent = AgentName.of("[PROJECT]", "[LOCATION]", "[AGENT]");
  *   testCasesClient.batchDeleteTestCases(parent);
@@ -252,8 +291,11 @@
  * <p>Sample for TransitionRouteGroupsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (TransitionRouteGroupsClient transitionRouteGroupsClient =
  *     TransitionRouteGroupsClient.create()) {
  *   TransitionRouteGroupName name =
@@ -271,8 +313,11 @@
  * <p>Sample for VersionsClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (VersionsClient versionsClient = VersionsClient.create()) {
  *   VersionName name =
  *       VersionName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[FLOW]", "[VERSION]");
@@ -288,8 +333,11 @@
  * <p>Sample for WebhooksClient:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * try (WebhooksClient webhooksClient = WebhooksClient.create()) {
  *   WebhookName name = WebhookName.of("[PROJECT]", "[LOCATION]", "[AGENT]", "[WEBHOOK]");
  *   Webhook response = webhooksClient.getWebhook(name);
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java
index e47d18a3000e..eb37ce5407fa 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/AgentsStubSettings.java
@@ -95,16 +95,16 @@
  * <p>For example, to set the total timeout of getAgent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * AgentsStubSettings.Builder agentsSettingsBuilder = AgentsStubSettings.newBuilder();
  * agentsSettingsBuilder
  *     .getAgentSettings()
  *     .setRetrySettings(
- *         agentsSettingsBuilder
- *             .getAgentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         agentsSettingsBuilder.getAgentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * AgentsStubSettings agentsSettings = agentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java
index 955a005c7292..72c576c0953b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ChangelogsStubSettings.java
@@ -79,16 +79,16 @@
  * <p>For example, to set the total timeout of getChangelog to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ChangelogsStubSettings.Builder changelogsSettingsBuilder = ChangelogsStubSettings.newBuilder();
  * changelogsSettingsBuilder
  *     .getChangelogSettings()
  *     .setRetrySettings(
- *         changelogsSettingsBuilder
- *             .getChangelogSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         changelogsSettingsBuilder.getChangelogSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ChangelogsStubSettings changelogsSettings = changelogsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java
index a727c863331b..031f04810197 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/DeploymentsStubSettings.java
@@ -79,17 +79,17 @@
  * <p>For example, to set the total timeout of getDeployment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * DeploymentsStubSettings.Builder deploymentsSettingsBuilder =
  *     DeploymentsStubSettings.newBuilder();
  * deploymentsSettingsBuilder
  *     .getDeploymentSettings()
  *     .setRetrySettings(
- *         deploymentsSettingsBuilder
- *             .getDeploymentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         deploymentsSettingsBuilder.getDeploymentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * DeploymentsStubSettings deploymentsSettings = deploymentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java
index 3c6b1e0c2b34..dc0cd974d99a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EntityTypesStubSettings.java
@@ -83,17 +83,17 @@
  * <p>For example, to set the total timeout of getEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EntityTypesStubSettings.Builder entityTypesSettingsBuilder =
  *     EntityTypesStubSettings.newBuilder();
  * entityTypesSettingsBuilder
  *     .getEntityTypeSettings()
  *     .setRetrySettings(
- *         entityTypesSettingsBuilder
- *             .getEntityTypeSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         entityTypesSettingsBuilder.getEntityTypeSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EntityTypesStubSettings entityTypesSettings = entityTypesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java
index f7d0ff308481..e1ceec23b6ba 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/EnvironmentsStubSettings.java
@@ -102,17 +102,17 @@
  * <p>For example, to set the total timeout of getEnvironment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * EnvironmentsStubSettings.Builder environmentsSettingsBuilder =
  *     EnvironmentsStubSettings.newBuilder();
  * environmentsSettingsBuilder
  *     .getEnvironmentSettings()
  *     .setRetrySettings(
- *         environmentsSettingsBuilder
- *             .getEnvironmentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         environmentsSettingsBuilder.getEnvironmentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * EnvironmentsStubSettings environmentsSettings = environmentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java
index eb745e11b9c9..3f25a440395a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/ExperimentsStubSettings.java
@@ -85,17 +85,17 @@
  * <p>For example, to set the total timeout of getExperiment to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * ExperimentsStubSettings.Builder experimentsSettingsBuilder =
  *     ExperimentsStubSettings.newBuilder();
  * experimentsSettingsBuilder
  *     .getExperimentSettings()
  *     .setRetrySettings(
- *         experimentsSettingsBuilder
- *             .getExperimentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         experimentsSettingsBuilder.getExperimentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * ExperimentsStubSettings experimentsSettings = experimentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java
index 6698411520bf..11f7404a7cbd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/FlowsStubSettings.java
@@ -97,16 +97,16 @@
  * <p>For example, to set the total timeout of createFlow to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * FlowsStubSettings.Builder flowsSettingsBuilder = FlowsStubSettings.newBuilder();
  * flowsSettingsBuilder
  *     .createFlowSettings()
  *     .setRetrySettings(
- *         flowsSettingsBuilder
- *             .createFlowSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         flowsSettingsBuilder.createFlowSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * FlowsStubSettings flowsSettings = flowsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java
index cbcc8142c046..2aec29c635f0 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonAgentsStub.java
@@ -170,7 +170,8 @@ public class HttpJsonAgentsStub extends AgentsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("agent", request.getAgent()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("agent", request.getAgent(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Agent>newBuilder()
@@ -204,7 +205,8 @@ public class HttpJsonAgentsStub extends AgentsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("agent", request.getAgent()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("agent", request.getAgent(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Agent>newBuilder()
@@ -272,7 +274,7 @@ public class HttpJsonAgentsStub extends AgentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -311,7 +313,7 @@ public class HttpJsonAgentsStub extends AgentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -350,7 +352,7 @@ public class HttpJsonAgentsStub extends AgentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<AgentValidationResult>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java
index 5b6df9104727..c41364a462fa 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEntityTypesStub.java
@@ -164,7 +164,7 @@ public class HttpJsonEntityTypesStub extends EntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("entityType", request.getEntityType()))
+                                  .toBody("entityType", request.getEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<EntityType>newBuilder()
@@ -204,7 +204,7 @@ public class HttpJsonEntityTypesStub extends EntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("entityType", request.getEntityType()))
+                                  .toBody("entityType", request.getEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<EntityType>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java
index de5758f083dc..a2a42655e181 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonEnvironmentsStub.java
@@ -184,7 +184,7 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("environment", request.getEnvironment()))
+                                  .toBody("environment", request.getEnvironment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -226,7 +226,7 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("environment", request.getEnvironment()))
+                                  .toBody("environment", request.getEnvironment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -339,7 +339,8 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearEnvironment().build()))
+                                  .toBody(
+                                      "*", request.toBuilder().clearEnvironment().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -417,7 +418,8 @@ public class HttpJsonEnvironmentsStub extends EnvironmentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearEnvironment().build()))
+                                  .toBody(
+                                      "*", request.toBuilder().clearEnvironment().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java
index 4c572ef2cd11..790ee256af2e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonExperimentsStub.java
@@ -160,7 +160,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("experiment", request.getExperiment()))
+                                  .toBody("experiment", request.getExperiment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
@@ -198,7 +198,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("experiment", request.getExperiment()))
+                                  .toBody("experiment", request.getExperiment(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
@@ -267,7 +267,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
@@ -303,7 +303,7 @@ public class HttpJsonExperimentsStub extends ExperimentsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Experiment>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java
index 2b2337a8c9db..73c6bdfa7caa 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonFlowsStub.java
@@ -107,7 +107,8 @@ public class HttpJsonFlowsStub extends FlowsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("flow", request.getFlow()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("flow", request.getFlow(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Flow>newBuilder()
@@ -245,7 +246,8 @@ public class HttpJsonFlowsStub extends FlowsStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("flow", request.getFlow()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("flow", request.getFlow(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Flow>newBuilder()
@@ -280,7 +282,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                   .setRequestBodyExtractor(
                       request ->
                           ProtoRestSerializer.create()
-                              .toBody("*", request.toBuilder().clearName().build()))
+                              .toBody("*", request.toBuilder().clearName().build(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Operation>newBuilder()
@@ -319,7 +321,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<FlowValidationResult>newBuilder()
@@ -390,7 +392,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -429,7 +431,7 @@ public class HttpJsonFlowsStub extends FlowsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java
index 33f4ef974d90..403098faf1cd 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonIntentsStub.java
@@ -162,7 +162,8 @@ public class HttpJsonIntentsStub extends IntentsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("intent", request.getIntent()))
+                              ProtoRestSerializer.create()
+                                  .toBody("intent", request.getIntent(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Intent>newBuilder()
@@ -201,7 +202,8 @@ public class HttpJsonIntentsStub extends IntentsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("intent", request.getIntent()))
+                              ProtoRestSerializer.create()
+                                  .toBody("intent", request.getIntent(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Intent>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java
index d59ba3260b1f..fb16e34c5c0b 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonPagesStub.java
@@ -158,7 +158,8 @@ public class HttpJsonPagesStub extends PagesStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("page", request.getPage()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("page", request.getPage(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Page>newBuilder()
@@ -193,7 +194,8 @@ public class HttpJsonPagesStub extends PagesStub {
                         return fields;
                       })
                   .setRequestBodyExtractor(
-                      request -> ProtoRestSerializer.create().toBody("page", request.getPage()))
+                      request ->
+                          ProtoRestSerializer.create().toBody("page", request.getPage(), false))
                   .build())
           .setResponseParser(
               ProtoMessageResponseParser.<Page>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java
index d04e5af024ca..6a6150b03292 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSecuritySettingsServiceStub.java
@@ -91,7 +91,7 @@ public class HttpJsonSecuritySettingsServiceStub extends SecuritySettingsService
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("securitySettings", request.getSecuritySettings()))
+                                  .toBody("securitySettings", request.getSecuritySettings(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SecuritySettings>newBuilder()
@@ -166,7 +166,7 @@ public class HttpJsonSecuritySettingsServiceStub extends SecuritySettingsService
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("securitySettings", request.getSecuritySettings()))
+                                  .toBody("securitySettings", request.getSecuritySettings(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SecuritySettings>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java
index 9c6ccdb93cda..1c07df1a76fa 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionEntityTypesStub.java
@@ -169,7 +169,8 @@ public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("sessionEntityType", request.getSessionEntityType()))
+                                  .toBody(
+                                      "sessionEntityType", request.getSessionEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SessionEntityType>newBuilder()
@@ -212,7 +213,8 @@ public class HttpJsonSessionEntityTypesStub extends SessionEntityTypesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("sessionEntityType", request.getSessionEntityType()))
+                                  .toBody(
+                                      "sessionEntityType", request.getSessionEntityType(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<SessionEntityType>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java
index 557e1d2903e3..c95eb72485f9 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonSessionsStub.java
@@ -89,7 +89,7 @@ public class HttpJsonSessionsStub extends SessionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearSession().build()))
+                                  .toBody("*", request.toBuilder().clearSession().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<DetectIntentResponse>newBuilder()
@@ -127,7 +127,7 @@ public class HttpJsonSessionsStub extends SessionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearSession().build()))
+                                  .toBody("*", request.toBuilder().clearSession().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<MatchIntentResponse>newBuilder()
@@ -167,7 +167,8 @@ public class HttpJsonSessionsStub extends SessionsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("*", request.toBuilder().build()))
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<FulfillIntentResponse>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java
index 3189399d4e0f..1a2b5724a480 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTestCasesStub.java
@@ -160,7 +160,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Empty>newBuilder()
@@ -229,7 +229,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("testCase", request.getTestCase()))
+                                  .toBody("testCase", request.getTestCase(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TestCase>newBuilder()
@@ -267,7 +267,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("testCase", request.getTestCase()))
+                                  .toBody("testCase", request.getTestCase(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TestCase>newBuilder()
@@ -303,7 +303,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -342,7 +342,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -415,7 +415,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -454,7 +454,7 @@ public class HttpJsonTestCasesStub extends TestCasesStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearParent().build()))
+                                  .toBody("*", request.toBuilder().clearParent().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java
index b2887f503704..8499b6e802bf 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonTransitionRouteGroupsStub.java
@@ -170,7 +170,9 @@ public class HttpJsonTransitionRouteGroupsStub extends TransitionRouteGroupsStub
                           request ->
                               ProtoRestSerializer.create()
                                   .toBody(
-                                      "transitionRouteGroup", request.getTransitionRouteGroup()))
+                                      "transitionRouteGroup",
+                                      request.getTransitionRouteGroup(),
+                                      false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TransitionRouteGroup>newBuilder()
@@ -214,7 +216,9 @@ public class HttpJsonTransitionRouteGroupsStub extends TransitionRouteGroupsStub
                           request ->
                               ProtoRestSerializer.create()
                                   .toBody(
-                                      "transitionRouteGroup", request.getTransitionRouteGroup()))
+                                      "transitionRouteGroup",
+                                      request.getTransitionRouteGroup(),
+                                      false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<TransitionRouteGroup>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java
index 18ec28fbdda1..537b9273af17 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonVersionsStub.java
@@ -171,7 +171,8 @@ public class HttpJsonVersionsStub extends VersionsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("version", request.getVersion()))
+                              ProtoRestSerializer.create()
+                                  .toBody("version", request.getVersion(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -211,7 +212,8 @@ public class HttpJsonVersionsStub extends VersionsStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("version", request.getVersion()))
+                              ProtoRestSerializer.create()
+                                  .toBody("version", request.getVersion(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Version>newBuilder()
@@ -280,7 +282,7 @@ public class HttpJsonVersionsStub extends VersionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearName().build()))
+                                  .toBody("*", request.toBuilder().clearName().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Operation>newBuilder()
@@ -320,7 +322,8 @@ public class HttpJsonVersionsStub extends VersionsStub {
                       .setRequestBodyExtractor(
                           request ->
                               ProtoRestSerializer.create()
-                                  .toBody("*", request.toBuilder().clearBaseVersion().build()))
+                                  .toBody(
+                                      "*", request.toBuilder().clearBaseVersion().build(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<CompareVersionsResponse>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java
index 177001402468..2bd36d38cc7e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/HttpJsonWebhooksStub.java
@@ -156,7 +156,8 @@ public class HttpJsonWebhooksStub extends WebhooksStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("webhook", request.getWebhook()))
+                              ProtoRestSerializer.create()
+                                  .toBody("webhook", request.getWebhook(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Webhook>newBuilder()
@@ -193,7 +194,8 @@ public class HttpJsonWebhooksStub extends WebhooksStub {
                           })
                       .setRequestBodyExtractor(
                           request ->
-                              ProtoRestSerializer.create().toBody("webhook", request.getWebhook()))
+                              ProtoRestSerializer.create()
+                                  .toBody("webhook", request.getWebhook(), false))
                       .build())
               .setResponseParser(
                   ProtoMessageResponseParser.<Webhook>newBuilder()
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java
index e0edf46b1853..23815006a79a 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/IntentsStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of getIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * IntentsStubSettings.Builder intentsSettingsBuilder = IntentsStubSettings.newBuilder();
  * intentsSettingsBuilder
  *     .getIntentSettings()
  *     .setRetrySettings(
- *         intentsSettingsBuilder
- *             .getIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         intentsSettingsBuilder.getIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * IntentsStubSettings intentsSettings = intentsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java
index d097706bacb9..580c69bd55ca 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/PagesStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of getPage to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * PagesStubSettings.Builder pagesSettingsBuilder = PagesStubSettings.newBuilder();
  * pagesSettingsBuilder
  *     .getPageSettings()
  *     .setRetrySettings(
- *         pagesSettingsBuilder
- *             .getPageSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         pagesSettingsBuilder.getPageSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * PagesStubSettings pagesSettings = pagesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java
index e35158c14c00..4774ae7a285e 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SecuritySettingsServiceStubSettings.java
@@ -83,8 +83,11 @@
  * <p>For example, to set the total timeout of createSecuritySettings to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SecuritySettingsServiceStubSettings.Builder securitySettingsServiceSettingsBuilder =
  *     SecuritySettingsServiceStubSettings.newBuilder();
  * securitySettingsServiceSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java
index e3e21508fef2..1ce15263ae07 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionEntityTypesStubSettings.java
@@ -83,8 +83,11 @@
  * <p>For example, to set the total timeout of getSessionEntityType to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionEntityTypesStubSettings.Builder sessionEntityTypesSettingsBuilder =
  *     SessionEntityTypesStubSettings.newBuilder();
  * sessionEntityTypesSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java
index 690e6e1712f8..4353b394f911 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/SessionsStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of detectIntent to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * SessionsStubSettings.Builder sessionsSettingsBuilder = SessionsStubSettings.newBuilder();
  * sessionsSettingsBuilder
  *     .detectIntentSettings()
  *     .setRetrySettings(
- *         sessionsSettingsBuilder
- *             .detectIntentSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         sessionsSettingsBuilder.detectIntentSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * SessionsStubSettings sessionsSettings = sessionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java
index 32a013a2ed65..cb0cefd4cafb 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TestCasesStubSettings.java
@@ -107,16 +107,16 @@
  * <p>For example, to set the total timeout of batchDeleteTestCases to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TestCasesStubSettings.Builder testCasesSettingsBuilder = TestCasesStubSettings.newBuilder();
  * testCasesSettingsBuilder
  *     .batchDeleteTestCasesSettings()
  *     .setRetrySettings(
- *         testCasesSettingsBuilder
- *             .batchDeleteTestCasesSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         testCasesSettingsBuilder.batchDeleteTestCasesSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * TestCasesStubSettings testCasesSettings = testCasesSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java
index 133a82d17724..39feb04e7573 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/TransitionRouteGroupsStubSettings.java
@@ -83,8 +83,11 @@
  * <p>For example, to set the total timeout of getTransitionRouteGroup to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * TransitionRouteGroupsStubSettings.Builder transitionRouteGroupsSettingsBuilder =
  *     TransitionRouteGroupsStubSettings.newBuilder();
  * transitionRouteGroupsSettingsBuilder
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java
index c046cdc8446d..88b914157cf4 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/VersionsStubSettings.java
@@ -93,16 +93,16 @@
  * <p>For example, to set the total timeout of getVersion to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * VersionsStubSettings.Builder versionsSettingsBuilder = VersionsStubSettings.newBuilder();
  * versionsSettingsBuilder
  *     .getVersionSettings()
  *     .setRetrySettings(
- *         versionsSettingsBuilder
- *             .getVersionSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         versionsSettingsBuilder.getVersionSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * VersionsStubSettings versionsSettings = versionsSettingsBuilder.build();
diff --git a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java
index b065f105bc2a..5dfd777aca75 100644
--- a/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java
+++ b/java-dialogflow-cx/google-cloud-dialogflow-cx/src/main/java/com/google/cloud/dialogflow/cx/v3beta1/stub/WebhooksStubSettings.java
@@ -83,16 +83,16 @@
  * <p>For example, to set the total timeout of getWebhook to 30 seconds:
  *
  * <pre>{@code
- * // This snippet has been automatically generated for illustrative purposes only.
- * // It may require modifications to work in your environment.
+ * // This snippet has been automatically generated and should be regarded as a code template only.
+ * // It will require modifications to work:
+ * // - It may require correct/in-range values for request initialization.
+ * // - It may require specifying regional endpoints when creating the service client as shown in
+ * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
  * WebhooksStubSettings.Builder webhooksSettingsBuilder = WebhooksStubSettings.newBuilder();
  * webhooksSettingsBuilder
  *     .getWebhookSettings()
  *     .setRetrySettings(
- *         webhooksSettingsBuilder
- *             .getWebhookSettings()
- *             .getRetrySettings()
- *             .toBuilder()
+ *         webhooksSettingsBuilder.getWebhookSettings().getRetrySettings().toBuilder()
  *             .setTotalTimeout(Duration.ofSeconds(30))
  *             .build());
  * WebhooksStubSettings webhooksSettings = webhooksSettingsBuilder.build();