private static void Checkout()
        {
            Ecom_CheckoutService.CheckoutServiceClient ecomService = new CheckoutServiceClient();
            Console.WriteLine("ECOM dan orderlar alınıyor..");
            List<OrderDO> ecomOrderList = ecomService.GetRecentOrders();

            Checkout_CheckoutService.CheckoutServiceClient checkoutService = new Checkout_CheckoutService.CheckoutServiceClient();

            List<COrder> corList = MapEcomOrderToCheckoutOrder(ecomOrderList);


            Console.WriteLine("Checout sistemine ekleniyor.");

            List<string> transferredOrders = checkoutService.CheckoutOrders(corList);

            Console.WriteLine("Transfer edilen orderlar ECOM da onaylanıyor..");

            ecomService.ConfirmTransferredOrders(transferredOrders);

        }