public void Then_customs_have_been_notified()
 {
     A.CallTo(() => _customsApi.SendArrivalNotification(A <string> .That.IsEqualTo("King Roy"))).MustHaveHappened();
 }
 public void Then_the_external_customs_notification_api_is_not_called()
 {
     A.CallTo(() => _customsApi.SendArrivalNotification(A <string> .Ignored)).MustNotHaveHappened();
 }