|| StringUtil.isEmpty(merchantOrderNumber)) {
throw new ProtocolException("google order number " +
"and merchant order number must not be empty");
}
AddMerchantOrderNumberRequest addOrderNumberRequest
= _objectFact.createAddMerchantOrderNumberRequest();
addOrderNumberRequest.setGoogleOrderNumber(googleOrderNumber);
if (!StringUtil.isEmpty(merchantOrderNumber)) {
addOrderNumberRequest.setMerchantOrderNumber(merchantOrderNumber);
}
JAXBElement<AddMerchantOrderNumberRequest> addOrderNumberElem
= _objectFact.createAddMerchantOrderNumber(addOrderNumberRequest);
return convertToDOM(addOrderNumberElem);
}