ChatFcmToken typedef
ChatFcmToken =
void Function(String token)
Called with a fresh FCM registration token, on first obtaining one and again on every refresh, so the host app can hand it to its backend. The package has no opinion on that endpoint — it does not exist yet on the server this was built against — so this is a callback rather than a call.
Implementation
typedef ChatFcmToken = void Function(String token);