docs: public static void fillEntry(Element element, CmsUUID id, String rootPath, CmsRelationType type) {
  
          CmsLink link = new CmsLink(CmsXmlCategoryValue.TYPE_VFS_LINK, type, id, rootPath, true);
          // get xml node
          Element linkElement = element.element(CmsXmlPage.NODE_LINK);
          if (linkElement == null) {
              // create xml node if needed
              linkElement = element.addElement(CmsXmlPage.NODE_LINK);
          }
          // update xml node
          CmsLinkUpdateUtil.updateXmlForVfsFile(link, linkElement);
      }