Moving cmdlet initialization from ExecuteCmdlet to BeginProcessing

Author: dragonfly91

src/ResourceManager/RecoveryServices.Backup/Commands.RecoveryServices.Backup/RecoveryServicesBackupCmdletBase.cs

@@ -121,9 +121,9 @@ private void HandleException(Exception exception)
             }
         }
 
-        public override void ExecuteCmdlet()
+        protected override void BeginProcessing()
         {
-            base.ExecuteCmdlet();
+            base.BeginProcessing();
 
             InitializeAzureBackupCmdlet();
         }