// RB2 Core Connect using CoreConnect.Commerce.Orders; namespace CoreConnect.Commerce.Checkout;public interface ICheckoutService{ Task<Order> CreateOrder(CreateOrderRequest request, CancellationToken cancellationToken); Task<Order> CancelOrder(CancelOrderRequest request, CancellationToken cancellationToken); Task<Order> AddPaymentToOrder(string orderId, OrderPayment data, CancellationToken cancellationToken);}