public override void Visit(PublicService service) { Console.WriteLine("可疑人员访问公有服务,拒绝访问"); }
public override void Visit(PublicService service) { Console.WriteLine("管理员访问公有服务,允许所有操作"); }
public override void Visit(PublicService service) { Console.WriteLine("普通人员访问公有服务,拥有读取权限"); }
public abstract void Visit(PublicService service);