public async Task When_I_cancel_a_settlement_Then_it_should_return_a_valid_response_async()
{
_auth = await _cardService.AuthorizeAsync(_auth);
Settlement settle = Settlement.Builder()
.MerchantRefNum(_auth.MerchantRefNum())
.AuthorizationId(_auth.Id())
.Build();
settle = await _cardService.SettlementAsync(settle);
Settlement response = await _cardService.CancelSettlementAsync(settle);
Assert.That(response.Status(), Is.EqualTo("CANCELLED"));
}