* @return <code>OrderPatch</code> object representing the orderpatch request
* body or <code>null</code> if the
* @see org.apache.jackrabbit.webdav.ordering.OrderingDavServletRequest#getOrderPatch()
*/
public OrderPatch getOrderPatch() throws DavException {
OrderPatch op = null;
Document requestDocument = getRequestDocument();
if (requestDocument != null) {
Element root = requestDocument.getDocumentElement();
op = OrderPatch.createFromXml(root);
} else {