signIn method
Implementation
@override
Future<UserCredential> signIn() async {
print("sign in with $email and $password");
try {
final authResult = await _firebaseAuth.signInWithEmailAndPassword(
email: email, password: password);
assert(authResult.user!.uid == _firebaseAuth.currentUser!.uid);
return authResult;
} catch (e) {
return Future.error(e);
}
}