public void CreditServiceEdit() { Transaction response = service.Charge(12m) .WithCurrency("USD") .WithPaymentMethod(card) .Execute(); Assert.IsNotNull(response); Assert.AreEqual("00", response.ResponseCode); Transaction editResponse = service.Edit(response.TransactionId) .WithAmount(14m) .WithGratuity(2m) .Execute(); Assert.IsNotNull(editResponse); Assert.AreEqual("00", editResponse.ResponseCode); }