CityCards_Customer_Flutter/lib/core/global_keys.dart

import 'package:flutter/material.dart';

class GlobalKeys {
  static final GlobalKey<ScaffoldMessengerState> scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>();
  static final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
  static final GlobalKey<OverlayState> overlayKey = GlobalKey<OverlayState>();
}