docs: @Override
      protected Element exportDataElement(String id) {
          final FragmentDefinition fragmentDefinition =
                  fragmentDefinitionDao.getFragmentDefinition(id);
          if (fragmentDefinition == null) {
              return null;
          }
  
          final org.dom4j.Document fragmentDefDoc = new org.dom4j.DocumentFactory().createDocument();
          final Element fragmentDefElement = fragmentDefDoc.addElement("fragment-definition");
          fragmentDefElement.addNamespace("dlm", Constants.NS_URI);
          fragmentDefElement.addAttribute(
                  "script", "classpath://org/jasig/portal/io/import-fragment-definition_v3-1.crn");
          fragmentDefinition.toElement(fragmentDefElement);
  
          return fragmentDefElement;
      }