void Start()
{
var diner = new DinerMenu();
var lunch = new LunchMenu();
_PrintMenus(diner);
_PrintMenus(lunch);
}
static void Main(string[] args)
{
var dinnerMenu = new DinnerMenu();
var lunchMenu = new LunchMenu();
var menuIterators = new List <IEnumerator <Dish> >();
menuIterators.Add(dinnerMenu.CreateIterator());
menuIterators.Add(lunchMenu.CreateIterator());
var waitress = new Waitress(menuIterators);
waitress.printMenuItems();
}