signInWithPassword method
Implementation
Future<FirebaseAccount> signInWithPassword(String email, String password,
{bool autoRefresh = true}) async {
if (_instance == null) {
throw Exception(
"Firestore hasn't been initialized. Please call Firestore.initialize() before using it.");
}
firebaseAccount = await _firebaseAuth!
.signInWithPassword(email, password, autoRefresh: autoRefresh);
return firebaseAccount!;
}