Element cdListElem = ItsNatTreeWalker.getLastChildElement(discsElem);
ItsNatServlet servlet = request.getItsNatServlet();
ItsNatDocFragmentTemplate fragTemplate = servlet.getItsNatDocFragmentTemplate("manual.core.xmlFragExample");
DocumentFragment docFrag = fragTemplate.loadDocumentFragment(itsNatDoc);
discsElem.insertBefore(docFrag,cdListElem); // docFrag is empty now
ElementGroupManager factory = itsNatDoc.getElementGroupManager();
ElementList discList = factory.createElementList(cdListElem,true);