feat: [SqlAdmin] Support for CLUSTER_MAINTENANCE and SELF_SERVICE_MAINTENANCE operation types

SqlAdmin/samples/V1/SqlInstancesServiceClient/promote_replica.php

@@ -29,7 +29,8 @@
 use Google\Cloud\Sql\V1\SqlInstancesPromoteReplicaRequest;
 
 /**
- * Promotes the read replica instance to be a stand-alone Cloud SQL instance.
+ * Promotes the read replica instance to be an independent Cloud SQL
+ * primary instance.
  * Using this operation might cause your instance to restart.
  *
  * This sample has been automatically generated and should be regarded as a code

SqlAdmin/samples/V1/SqlInstancesServiceClient/switchover.php

@@ -29,7 +29,8 @@
 use Google\Cloud\Sql\V1\SqlInstancesSwitchoverRequest;
 
 /**
- * Switches over from the primary instance to the replica instance.
+ * Switches over from the primary instance to the designated DR replica
+ * instance.
  *
  * This sample has been automatically generated and should be regarded as a code
  * template only. It will require modifications to work:

SqlAdmin/src/V1/Client/SqlInstancesServiceClient.php

@@ -733,7 +733,8 @@ public function performDiskShrink(SqlInstancesPerformDiskShrinkRequest $request,
     }
 
     /**
-     * Promotes the read replica instance to be a stand-alone Cloud SQL instance.
+     * Promotes the read replica instance to be an independent Cloud SQL
+     * primary instance.
      * Using this operation might cause your instance to restart.
      *
      * The async variant is {@see SqlInstancesServiceClient::promoteReplicaAsync()} .
@@ -1051,7 +1052,8 @@ public function stopReplica(SqlInstancesStopReplicaRequest $request, array $call
     }
 
     /**
-     * Switches over from the primary instance to the replica instance.
+     * Switches over from the primary instance to the designated DR replica
+     * instance.
      *
      * The async variant is {@see SqlInstancesServiceClient::switchoverAsync()} .
      *