code: @Override
      public Tuple<String, Element> exportData(String id) {
          final Element node = this.exportDataElement(id);
          if (node == null) {
              return null;
          }
  
          return new Tuple<String, Element>(id, node);
      }
docs: /* (non-Javadoc)
  @see org.apereo.portal.io.xml.IDataExporter#exportData(java.lang.String)