Push ActivationStateMachine tests (#662)

* Initial Push types

* Update project

* ARTPushNotifications interface

* Realtime: integrate Push type

* Rest: integrate Push type

* Push.activate

* fixup! Push.activate

* Push.publish

 - add PushRecipient protocol

* fixup! Push.publish

* PushChannel subscribe and unsubscribe

* Fix registerCallback

* Remove warnings

 - unused methods

* Fix FormFactor

* Fix: use device token as Hex string

* Fix: should respect the default encoder

 - useBinaryProtocol

* Remove ARTPushRecipient protocol and types

* Add ULID pod

* Use ULID as DeviceId

* Push.deactivate

* Load local device

* Push: update device

* PushChannel.subscriptions

* Update ULID pod

* PushAdmin

* Update ULID pod

* Remove warnings

* JSON encoder: normalize deviceToken hex string

* Fix: Push.publish request body

* Update device forms

* Activation State Machine: init

* Activation State Machine: registration

* Removed ablyPushAuthKey, ablyPushAuthToken and ablyPushClientId from push delegate

* Add Rest argument on Push delegate

* tmp

* Fix things for push, and adapt to latest API.

* Initial State Machine tests

* ARTLocalDeviceStorage

* Fix: ARTPushActivationState

* Storage should synchronize UserDefaults

* Storage Keys accessible on tests

* State Machine tests

* ActivationStateMachine: custom delegate and other fixes

* PushActivationStateMachine

* Implement Device storage

* Fix headers

* Fix tests

Ably.xcodeproj/project.pbxproj

@@ -78,6 +78,7 @@
 		D71D30041C5F7B2F002115B0 /* RealtimeClientChannels.swift in Sources */ = {isa = PBXBuildFile; fileRef = D71D30031C5F7B2F002115B0 /* RealtimeClientChannels.swift */; };
 		D72304701BB72CED00F1ABDA /* RealtimeClient.swift in Sources */ = {isa = PBXBuildFile; fileRef = D723046F1BB72CED00F1ABDA /* RealtimeClient.swift */; };
 		D72768211C9C19040022F8B2 /* RestClientPresence.swift in Sources */ = {isa = PBXBuildFile; fileRef = D72768201C9C19040022F8B2 /* RestClientPresence.swift */; };
+		D72C67DF201AB74000978EBB /* ARTPushActivationStateMachine+Private.h in Headers */ = {isa = PBXBuildFile; fileRef = D72C67DE201AB74000978EBB /* ARTPushActivationStateMachine+Private.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		D73691FF1DB788C40062C150 /* ARTAuthDetails.h in Headers */ = {isa = PBXBuildFile; fileRef = D73691FD1DB788C40062C150 /* ARTAuthDetails.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D73692001DB788C40062C150 /* ARTAuthDetails.m in Sources */ = {isa = PBXBuildFile; fileRef = D73691FE1DB788C40062C150 /* ARTAuthDetails.m */; };
 		D736A0C91F916553005ABE81 /* KSCrash.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D736A0C61F916553005ABE81 /* KSCrash.framework */; };
@@ -159,6 +160,9 @@
 		D7DC8AF11C6AA0C8005AF165 /* ARTDefault+Private.h in Headers */ = {isa = PBXBuildFile; fileRef = D7DC8AF01C6A9FFC005AF165 /* ARTDefault+Private.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		D7DEAFD11E65926D00D23F24 /* ARTLocalDevice.h in Headers */ = {isa = PBXBuildFile; fileRef = D7DEAFCF1E65926D00D23F24 /* ARTLocalDevice.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D7DEAFD21E65926D00D23F24 /* ARTLocalDevice.m in Sources */ = {isa = PBXBuildFile; fileRef = D7DEAFD01E65926D00D23F24 /* ARTLocalDevice.m */; };
+		D7DF73851EA600240013CD36 /* PushActivationStateMachine.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7DF73831EA5FE620013CD36 /* PushActivationStateMachine.swift */; };
+		D7DF738A1EA645300013CD36 /* ARTLocalDeviceStorage.h in Headers */ = {isa = PBXBuildFile; fileRef = D7DF73881EA645300013CD36 /* ARTLocalDeviceStorage.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		D7DF738B1EA645300013CD36 /* ARTLocalDeviceStorage.m in Sources */ = {isa = PBXBuildFile; fileRef = D7DF73891EA645300013CD36 /* ARTLocalDeviceStorage.m */; };
 		D7EBE5A31BE8391E0086E675 /* RealtimeClientConnection.swift in Sources */ = {isa = PBXBuildFile; fileRef = D7EBE5A21BE8391E0086E675 /* RealtimeClientConnection.swift */; };
 		D7EBE5A41BE9F6900086E675 /* ARTConnection.h in Headers */ = {isa = PBXBuildFile; fileRef = D7D29B401BE3DD0600374295 /* ARTConnection.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		D7F1D3731BF4DE07001A4B5E /* ARTRestPresence.h in Headers */ = {isa = PBXBuildFile; fileRef = D7F1D3711BF4DE07001A4B5E /* ARTRestPresence.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -337,6 +341,7 @@
 		D71D30031C5F7B2F002115B0 /* RealtimeClientChannels.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RealtimeClientChannels.swift; sourceTree = "<group>"; };
 		D723046F1BB72CED00F1ABDA /* RealtimeClient.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RealtimeClient.swift; sourceTree = "<group>"; };
 		D72768201C9C19040022F8B2 /* RestClientPresence.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RestClientPresence.swift; sourceTree = "<group>"; };
+		D72C67DE201AB74000978EBB /* ARTPushActivationStateMachine+Private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "ARTPushActivationStateMachine+Private.h"; sourceTree = "<group>"; };
 		D73691FD1DB788C40062C150 /* ARTAuthDetails.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ARTAuthDetails.h; sourceTree = "<group>"; };
 		D73691FE1DB788C40062C150 /* ARTAuthDetails.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ARTAuthDetails.m; sourceTree = "<group>"; };
 		D736A0C61F916553005ABE81 /* KSCrash.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = KSCrash.framework; path = Carthage/Build/iOS/KSCrash.framework; sourceTree = "<group>"; };
@@ -417,6 +422,9 @@
 		D7DC8AF01C6A9FFC005AF165 /* ARTDefault+Private.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "ARTDefault+Private.h"; sourceTree = "<group>"; };
 		D7DEAFCF1E65926D00D23F24 /* ARTLocalDevice.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ARTLocalDevice.h; sourceTree = "<group>"; };
 		D7DEAFD01E65926D00D23F24 /* ARTLocalDevice.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ARTLocalDevice.m; sourceTree = "<group>"; };
+		D7DF73831EA5FE620013CD36 /* PushActivationStateMachine.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PushActivationStateMachine.swift; sourceTree = "<group>"; };
+		D7DF73881EA645300013CD36 /* ARTLocalDeviceStorage.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ARTLocalDeviceStorage.h; sourceTree = "<group>"; };
+		D7DF73891EA645300013CD36 /* ARTLocalDeviceStorage.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ARTLocalDeviceStorage.m; sourceTree = "<group>"; };
 		D7EBE5A21BE8391E0086E675 /* RealtimeClientConnection.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RealtimeClientConnection.swift; sourceTree = "<group>"; };
 		D7EE14F51F07964500C178D5 /* Version.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Version.xcconfig; sourceTree = "<group>"; };
 		D7F1D3711BF4DE07001A4B5E /* ARTRestPresence.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ARTRestPresence.h; sourceTree = "<group>"; };
@@ -559,6 +567,7 @@
 				EB1AE0CD1C5C3A4900D62250 /* Utilities.swift */,
 				EB7913A71C6E54C3000ABF9B /* Crypto.swift */,
 				D74A17B61FA0D81A006D27B5 /* PushAdmin.swift */,
+				D7DF73831EA5FE620013CD36 /* PushActivationStateMachine.swift */,
 			);
 			path = Spec;
 			sourceTree = "<group>";
@@ -657,6 +666,7 @@
 			isa = PBXGroup;
 			children = (
 				D71966E21E5DF360000974DD /* ARTPushActivationStateMachine.h */,
+				D72C67DE201AB74000978EBB /* ARTPushActivationStateMachine+Private.h */,
 				D71966E31E5DF360000974DD /* ARTPushActivationStateMachine.m */,
 				D71966E81E5E006E000974DD /* ARTPushActivationState.h */,
 				D71966E91E5E006E000974DD /* ARTPushActivationState.m */,
@@ -854,9 +864,11 @@
 				D7B621931E4A6FE600684474 /* ARTDeviceDetails.m */,
 				D768C6AA1E4B5B0200436011 /* ARTDevicePushDetails.h */,
 				D768C6AB1E4B5B0200436011 /* ARTDevicePushDetails.m */,
-				EBFFAC181E97919C003E7326 /* ARTLocalDevice+Private.h */,
 				D7DEAFCF1E65926D00D23F24 /* ARTLocalDevice.h */,
+				EBFFAC181E97919C003E7326 /* ARTLocalDevice+Private.h */,
 				D7DEAFD01E65926D00D23F24 /* ARTLocalDevice.m */,
+				D7DF73881EA645300013CD36 /* ARTLocalDeviceStorage.h */,
+				D7DF73891EA645300013CD36 /* ARTLocalDeviceStorage.m */,
 				D71966E71E5DFFC6000974DD /* Activation State Machine */,
 				D71966E61E5DFFB2000974DD /* Admin */,
 			);
@@ -888,6 +900,7 @@
 				EB91213E1CA0AD6600BA0A40 /* ARTMsgPackEncoder.h in Headers */,
 				96A507BD1A3791490077CDF8 /* ARTRealtime.h in Headers */,
 				EB5E058D1C77027600A48B39 /* ARTCrypto+Private.h in Headers */,
+				D72C67DF201AB74000978EBB /* ARTPushActivationStateMachine+Private.h in Headers */,
 				D7DC8AF11C6AA0C8005AF165 /* ARTDefault+Private.h in Headers */,
 				961343D81A42E0B7006DC822 /* ARTClientOptions.h in Headers */,
 				D7534C321D79E5C20054C182 /* Ably.h in Headers */,
@@ -982,6 +995,7 @@
 				D7D8F8251BC2C691009718F2 /* ARTTokenDetails.h in Headers */,
 				D7D8F82B1BC2C706009718F2 /* ARTTokenRequest.h in Headers */,
 				EB1AE0CC1C5C1EB200D62250 /* ARTEventEmitter+Private.h in Headers */,
+				D7DF738A1EA645300013CD36 /* ARTLocalDeviceStorage.h in Headers */,
 				960D07931A45F1D800ED8C8C /* ARTCrypto.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -1155,6 +1169,7 @@
 				856AAC991B6E312F00B07119 /* RestClient.swift in Sources */,
 				D746AE2C1BBB625E003ECEF8 /* RestClientChannel.swift in Sources */,
 				D71D30041C5F7B2F002115B0 /* RealtimeClientChannels.swift in Sources */,
+				D7DF73851EA600240013CD36 /* PushActivationStateMachine.swift in Sources */,
 				D714A63E1C74D4B2002F2CA0 /* NSObject+TestSuite.swift in Sources */,
 				856AAC971B6E30C800B07119 /* TestUtilities.swift in Sources */,
 				D72768211C9C19040022F8B2 /* RestClientPresence.swift in Sources */,
@@ -1224,6 +1239,7 @@
 				EB9121401CA0AD8200BA0A40 /* ARTMsgPackEncoder.m in Sources */,
 				96BF61651A35CDE1004CF2B3 /* ARTBaseMessage.m in Sources */,
 				D7F1D3781BF4DE72001A4B5E /* ARTRealtimePresence.m in Sources */,
+				D7DF738B1EA645300013CD36 /* ARTLocalDeviceStorage.m in Sources */,
 				D7B621911E4A6E0200684474 /* ARTPush.m in Sources */,
 				D7AE18D31E5B410F00478D82 /* ARTPushChannelSubscriptions.m in Sources */,
 				1CD8DCA01B1C7315007EAF36 /* ARTDefault.m in Sources */,

Source/ARTAuth+Private.h

@@ -78,7 +78,7 @@ NS_ASSUME_NONNULL_BEGIN
 // Private TimeOffset setter for testing only
 - (void)setTimeOffset:(NSTimeInterval)offset;
 
-- (NSString *_Nullable)getClientId;
+- (NSString *_Nullable)clientId;
 
 - (NSString *_Nullable)appId;
 
@@ -89,6 +89,7 @@ NS_ASSUME_NONNULL_BEGIN
 @interface ARTEvent (AuthorizationState)
 - (instancetype)initWithAuthorizationState:(ARTAuthorizationState)value;
 + (instancetype)newWithAuthorizationState:(ARTAuthorizationState)value;
+
 @end
 
 NS_ASSUME_NONNULL_END

Source/ARTAuth.h

@@ -25,9 +25,9 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface ARTAuth : NSObject
 
-- (instancetype)init NS_UNAVAILABLE;
+@property (nullable, readonly) NSString *clientId;
 
-@property (nullable, readonly, getter=getClientId) NSString *clientId;
+- (instancetype)init NS_UNAVAILABLE;
 
 /**
  # (RSA8) Auth#requestToken

Source/ARTAuth.m

@@ -608,7 +608,7 @@ - (void)setProtocolClientId:(NSString *)clientId {
 } ART_TRY_OR_REPORT_CRASH_END
 }
 
-- (NSString *)getClientId {
+- (NSString *)clientId {
     __block NSString *clientId;
 dispatch_sync(_queue, ^{
 ART_TRY_OR_REPORT_CRASH_START(_rest) {

Source/ARTDeviceDetails.h

@@ -7,7 +7,7 @@
 //
 
 #import <Foundation/Foundation.h>
-#import "ARTPush.h"
+#import <Ably/ARTPush.h>
 
 @class ARTDevicePushDetails;
 

Source/ARTLocalDevice+Private.h

@@ -6,9 +6,6 @@
 //  Copyright © 2017 Ably. All rights reserved.
 //
 
-#ifndef ARTLocalDevice_Private_h
-#define ARTLocalDevice_Private_h
-
 #import <Ably/ARTRest.h>
 
 NS_ASSUME_NONNULL_BEGIN
@@ -29,5 +26,3 @@ extern NSString *const ARTDeviceTokenKey;
 @end
 
 NS_ASSUME_NONNULL_END
-
-#endif /* ARTLocalDevice_Private_h */

Source/ARTLocalDevice.h

@@ -7,7 +7,7 @@
 //
 
 #import <Foundation/Foundation.h>
-#import "ARTDeviceDetails.h"
+#import <Ably/ARTDeviceDetails.h>
 
 NS_ASSUME_NONNULL_BEGIN
 

Source/ARTLocalDevice.m

@@ -12,6 +12,7 @@
 #import "ARTRest+Private.h"
 #import "ARTAuth+Private.h"
 #import "ARTEncoder.h"
+#import "ARTLocalDeviceStorage.h"
 #import <ULID/ULID.h>
 
 NSString *const ARTDevicePlatform = @"ios";
@@ -59,26 +60,24 @@ + (ARTLocalDevice *)load:(ARTRest *_Nonnull)rest {
     }
     device.push.recipient[@"transportType"] = ARTDevicePushTransportType;
 
-    NSString *deviceId = [[NSUserDefaults standardUserDefaults] stringForKey:ARTDeviceIdKey];
+    NSString *deviceId = [rest.storage objectForKey:ARTDeviceIdKey];
     if (!deviceId) {
         deviceId = [[ULID new] ulidString];
-        [[NSUserDefaults standardUserDefaults] setObject:deviceId forKey:ARTDeviceIdKey];
-        [[NSUserDefaults standardUserDefaults] synchronize];
+        [rest.storage setObject:deviceId forKey:ARTDeviceIdKey];
     }
     device.id = deviceId;
-    device.updateToken = [[NSUserDefaults standardUserDefaults] stringForKey:ARTDeviceUpdateTokenKey];
+    device.updateToken = [rest.storage objectForKey:ARTDeviceUpdateTokenKey];
 
-    [device setDeviceToken:[[NSUserDefaults standardUserDefaults] stringForKey:ARTDeviceTokenKey]];
+    [device setDeviceToken:[rest.storage objectForKey:ARTDeviceTokenKey]];
 
     return device;
 }
 
 - (void)resetId {
-    [[NSUserDefaults standardUserDefaults] setObject:nil forKey:ARTDeviceIdKey];
+    [self.rest.storage setObject:nil forKey:ARTDeviceIdKey];
     [self setAndPersistUpdateToken:nil];
     NSString *deviceId = [[ULID new] ulidString];
-    [[NSUserDefaults standardUserDefaults] setObject:deviceId forKey:ARTDeviceIdKey];
-    [[NSUserDefaults standardUserDefaults] synchronize];
+    [self.rest.storage setObject:deviceId forKey:ARTDeviceIdKey];
     self.id = deviceId;
 }
 
@@ -118,14 +117,12 @@ - (void)setDeviceToken:(NSString *_Nonnull)token {
 }
 
 - (void)setAndPersistDeviceToken:(NSString *)token {
-    [[NSUserDefaults standardUserDefaults] setObject:token forKey:ARTDeviceTokenKey];
-    [[NSUserDefaults standardUserDefaults] synchronize];
+    [self.rest.storage setObject:token forKey:ARTDeviceTokenKey];
     [self setDeviceToken:token];
 }
 
 - (void)setAndPersistUpdateToken:(NSString *)token {
-    [[NSUserDefaults standardUserDefaults] setObject:token forKey:ARTDeviceUpdateTokenKey];
-    [[NSUserDefaults standardUserDefaults] synchronize];
+    [self.rest.storage setObject:token forKey:ARTDeviceUpdateTokenKey];
     self.updateToken = token;
 }
 

Source/ARTLocalDeviceStorage.h

@@ -0,0 +1,22 @@
+//
+//  ARTLocalDeviceStorage.h
+//  Ably
+//
+//  Created by Ricardo Pereira on 18/04/2017.
+//  Copyright © 2017 Ably. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol ARTDeviceStorage <NSObject>
+- (nullable id)objectForKey:(NSString *)key;
+- (void)setObject:(nullable id)value forKey:(NSString *)key;
+@end
+
+@interface ARTLocalDeviceStorage : NSObject<ARTDeviceStorage>
+
+@end
+
+NS_ASSUME_NONNULL_END

Source/ARTLocalDeviceStorage.m

@@ -0,0 +1,22 @@
+//
+//  ARTLocalDeviceStorage.m
+//  Ably
+//
+//  Created by Ricardo Pereira on 18/04/2017.
+//  Copyright © 2017 Ably. All rights reserved.
+//
+
+#import "ARTLocalDeviceStorage.h"
+
+@implementation ARTLocalDeviceStorage
+
+- (nullable id)objectForKey:(NSString *)key {
+    return [[NSUserDefaults standardUserDefaults] objectForKey:key];
+}
+
+- (void)setObject:(nullable id)value forKey:(NSString *)key {
+    [[NSUserDefaults standardUserDefaults] setObject:value forKey:key];
+    [[NSUserDefaults standardUserDefaults] synchronize];
+}
+
+@end

Source/ARTPush+Private.h

@@ -6,9 +6,6 @@
 //  Copyright © 2017 Ably. All rights reserved.
 //
 
-#ifndef ARTPush_Private_h
-#define ARTPush_Private_h
-
 #import <Ably/ARTPush.h>
 
 NS_ASSUME_NONNULL_BEGIN
@@ -20,5 +17,3 @@ NS_ASSUME_NONNULL_BEGIN
 @end
 
 NS_ASSUME_NONNULL_END
-
-#endif /* ARTPush_Private_h */

Source/ARTPush.h

@@ -7,8 +7,8 @@
 //
 
 #import <Foundation/Foundation.h>
-#import "ARTTypes.h"
-#import "ARTPushAdmin.h"
+#import <Ably/ARTTypes.h>
+#import <Ably/ARTPushAdmin.h>
 
 @class ARTRest;
 @class ARTRealtime;

Source/ARTPush.m

@@ -21,6 +21,7 @@
 #import "ARTClientOptions+Private.h"
 #import "ARTPushAdmin+Private.h"
 #import "ARTLocalDevice+Private.h"
+#import "ARTLocalDeviceStorage.h"
 #import "ARTRealtime+Private.h"
 
 NSString *const ARTDeviceIdKey = @"ARTDeviceId";
@@ -59,7 +60,7 @@ + (void)didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceTokenDa
     NSString *deviceToken = [[[deviceTokenData description] stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]] stringByReplacingOccurrencesOfString:@" " withString:@""];
 
     NSLog(@"ARTPush: device token received %@", deviceToken);
-    NSString *currentDeviceToken = [[NSUserDefaults standardUserDefaults] stringForKey:ARTDeviceTokenKey];
+    NSString *currentDeviceToken = [rest.storage objectForKey:ARTDeviceTokenKey];
     if ([currentDeviceToken isEqualToString:deviceToken]) {
         // Already stored.
         return;

Source/ARTPushActivationEvent.h

@@ -9,11 +9,15 @@
 #import <Foundation/Foundation.h>
 
 @class ARTErrorInfo;
+@class ARTPushActivationState;
 
 NS_ASSUME_NONNULL_BEGIN
 
 @interface ARTPushActivationEvent : NSObject <NSCoding>
 
+- (NSData *)archive;
++ (nullable ARTPushActivationState *)unarchive:(NSData *)data;
+
 @end
 
 /// Event with Error info

Source/ARTPushActivationEvent.m

@@ -27,6 +27,16 @@ - (void)encodeWithCoder:(NSCoder *)aCoder {
     // Just to persist the class info, no properties
 }
 
+#pragma mark - Archive/Unarchive
+
+- (NSData *)archive {
+    return [NSKeyedArchiver archivedDataWithRootObject:self];
+}
+
++ (ARTPushActivationEvent *)unarchive:(NSData *)data {
+    return [NSKeyedUnarchiver unarchiveObjectWithData:data];
+}
+
 @end
 
 #pragma mark - Event with Error info

Source/ARTPushActivationState.h

@@ -20,11 +20,15 @@ NS_ASSUME_NONNULL_BEGIN
 - (instancetype)init NS_UNAVAILABLE;
 - (instancetype)initWithMachine:(ARTPushActivationStateMachine *)machine;
 + (instancetype)new NS_UNAVAILABLE;
++ (instancetype)newWithMachine:(ARTPushActivationStateMachine *)machine;
 
 @property (atomic, strong, nullable) ARTPushActivationStateMachine *machine;
 
 - (nullable ARTPushActivationState *)transition:(ARTPushActivationEvent *)event;
 
+- (NSData *)archive;
++ (nullable ARTPushActivationState *)unarchive:(NSData *)data;
+
 @end
 
 /// Persistent State