public SaleInfo SubmitSale(Sale sale, string transactionId)
        {
            var saleService = new API.Services.SaleService();

            SubmitSaleDelegate s = saleService.SubmitSale;

            return this.ExecuteWithRetry(s, sale, transactionId);
        }
        public bool CancelSale(UInt64 id)
        {
            var saleService = new API.Services.SaleService();

            return saleService.CancelSale(id);
        }
 public IEnumerable<RecentSaleModel> GetRecentSales(string cardBarcode, int limit)
 {
     var saleService = new API.Services.SaleService();
     return saleService.GetRecentSales(cardBarcode, limit);
 }
        public bool CancelSale(int id, string cardBarcode, string phone)
        {
            var saleService = new API.Services.SaleService();

            return saleService.CancelSale(id, cardBarcode, phone);
        }