setToken function
Implementation
void setToken(String? token) {
if (token == null)
return;
dprint('FCM Token: $token');
User? user = FirebaseAuth.instance.currentUser;
if (user != null)
FirebaseFirestore.instance.collection("listusers").doc(user.uid).set({
"FCB": token,
}, SetOptions(merge:true)).then((value2) {});
}