public void When_I_refund_a_pending_settlement_Then_it_should_throw_RequestDeclinedException_sync()
        {
            _auth = _cardService.Authorize(_auth);

            Settlement settle = Settlement.Builder()
                                .MerchantRefNum(_auth.MerchantRefNum())
                                .AuthorizationId(_auth.Id())
                                .Build();

            settle = _cardService.Settlement(settle);

            Assert.Throws <Paysafe.Common.RequestDeclinedException>(() => _cardService.Refund(Refund.Builder()
                                                                                              .MerchantRefNum(settle.MerchantRefNum())
                                                                                              .SettlementId(settle.Id())
                                                                                              .Build()));
        }