public static FulfilledOrder BuyVoucher()
        {
            var builder  = new VoucherFulfilledOrderBuilder();
            var director = new OrderFulfillmentDirector(builder);

            director.FulfillOrder();
            return(director.GetFulfilledOrder());
        }
        public static FulfilledOrder BuyNewClothes()
        {
            var builder  = new ClothingFulfilledOrderBuilder();
            var director = new OrderFulfillmentDirector(builder);

            director.FulfillOrder();
            return(director.GetFulfilledOrder());
        }