feat: A new enum RelevanceThreshold is added

feat: A new field `relevance_threshold` is added to message `.google.cloud.talent.v4beta1.SearchJobsRequest`

PiperOrigin-RevId: 711468273

google/cloud/talent/v4beta1/job_service.proto

@@ -486,6 +486,27 @@ message SearchJobsRequest {
     KEYWORD_MATCH_TITLE_ONLY = 3;
   }
 
+  // The relevance threshold of the search results. The higher relevance
+  // threshold is, the higher relevant results are shown and the less number of
+  // results are returned.
+  enum RelevanceThreshold {
+    // Default value. In this case, server behavior defaults to Google defined
+    // threshold.
+    RELEVANCE_THRESHOLD_UNSPECIFIED = 0;
+
+    // Lowest relevance threshold.
+    LOWEST = 1;
+
+    // Low relevance threshold.
+    LOW = 2;
+
+    // Medium relevance threshold.
+    MEDIUM = 3;
+
+    // High relevance threshold.
+    HIGH = 4;
+  }
+
   // Custom ranking information for
   // [SearchJobsRequest][google.cloud.talent.v4beta1.SearchJobsRequest].
   message CustomRankingInfo {
@@ -856,6 +877,14 @@ message SearchJobsRequest {
   // [KeywordMatchMode.KEYWORD_MATCH_ALL][google.cloud.talent.v4beta1.SearchJobsRequest.KeywordMatchMode.KEYWORD_MATCH_ALL]
   // if no value is specified.
   KeywordMatchMode keyword_match_mode = 18;
+
+  // Optional. The relevance threshold of the search results.
+  //
+  // Default to Google defined threshold, leveraging a balance of
+  // precision and recall to deliver both highly accurate results and
+  // comprehensive coverage of relevant information.
+  RelevanceThreshold relevance_threshold = 19
+      [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Response for SearchJob method.