static void Main(string[] args)
{
PancakeHouseMenu pancakeHouseMenu = new PancakeHouseMenu();
DinerMenu dinerMenu = new DinerMenu();
Waitress waitress = new Waitress(pancakeHouseMenu, dinerMenu);
waitress.PrintMenu();
Console.ReadKey();
}
//服务员在这里依赖了具体的菜单
//尽管菜单都实现了统一的接口CreateIterator
public Waitress(PancakeHouseMenu pancakeHouseMenu, DinerMenu dinerMenu)
{
this.pancakeHouseMenu = pancakeHouseMenu;
this.dinerMenu = dinerMenu;
}