I created an app that receives push notifications via the “subscribe-to-topic” feature. So far, I have a Main module, a Starter module (including the Subs Process_Globals, Service_Create, Application_Error and the empty Subs Service_Start, Service_TastRemoved, Service_Destroy) and the FirebaseMessaging module (including the Subs Service_Create and Service_Start). Am I right, that I have to create a new Sub Receiver_Receive within the FirebaseMessaging module containing the code, which before was in the Subs Service_Create and Service_Start? And: Is the starter module still needed?