static void Main(string[] args)
{
Oven oven;
//Static factory
oven = Oven.GetOven(DishType.Burger);
oven.Prepare();
oven = Oven.GetOven(DishType.Pizza);
oven.Prepare();
//Delegate factory
oven = Oven.GetOven(() => new BurgerOven());
oven.Prepare();
oven = Oven.GetOven(() => new PizzaOven());
oven.Prepare();
//True factory
oven = new BurgerCreator().GetOven();
oven.Prepare();
oven = new PizzaCreator().GetOven();
oven.Prepare();
//Generic true factory
oven = OvenGenericFactory <PizzaCreator> .Create();
oven.Prepare();
oven = OvenGenericFactory <BurgerCreator> .Create();
oven.Prepare();
}