protected async override Task <object> OnPerform() { var contract = new { saleNumber = _cacheManager.SaleNumber, tillNumber = _cacheManager.TillNumber }; var content = new StringContent(JsonConvert.SerializeObject(contract) , Encoding.UTF8, ApplicationJSON); var response = await _checkoutRestClient.PumpTest(content); var data = await response.Content.ReadAsStringAsync(); switch (response.StatusCode) { case HttpStatusCode.OK: var paymentComplete = new DeSerializer().MapCommonCompletePayment(data); return(new Mapper().MapCommonCompletePayment(paymentComplete)); default: return(await HandleExceptions(response)); } }