public void TestEmailExceptionWithMessage()
 {
     EmailGatewayException e = new EmailGatewayException("Failed to do something.");
 }
 public void TestEmailExceptionWithMessageAndException()
 {
     EmailGatewayException e = new EmailGatewayException("Failed to do something else.", new ArgumentException());
 }
 public void TestEmailException()
 {
     EmailGatewayException e = new EmailGatewayException();
 }