signInWithGoogle missing - FirebaseAuth
signInWithGoogle missing - FirebaseAuth

https://stackoverflow.com/questions/54508591/flutter-firebase-signinwithgoogle-method-not-found
nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples,nisrulz/flutter-examples