logout method

@override Future<bool> logout()

Logout user.

Implementation

@override
Future<bool> logout() async {
  if (_isAuthenticated) {
    try {
      await signOut();
      _isAuthenticated = false;
      return true;
    } catch (e) {
      debugPrint("Logout failed: $e");
      return false;
    }
  }
  return false;
}