postRegisterCallback method
override
Called after the registration of all managers against the XmppConnection is done. This method is only called once during the entire lifetime of it.
Implementation
@override
Future<void> postRegisterCallback() async {
await super.postRegisterCallback();
// Register the sending callback
getAttributes()
.getManagerById<MessageManager>(messageManager)
?.registerMessageSendingCallback(messageSendingCallback);
}