tree.addStartElement(pr_response);
tree.startContent();
tree.addStartElement(pr_code);
tree.startContent();
tree.addText("" + Status.SUCCESS_CREATED.getCode());
tree.addEndElement();
if (expires.getTimeInMillis() != Long.MAX_VALUE) {
tree.addStartElement(pr_expires);
tree.startContent();
SimpleDateFormat gmtFrmt = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US);