docs: public static CmsSitemapData prefetch(HttpServletRequest request, String sitemapUri) throws CmsRpcException {
  
          CmsVfsSitemapService service = new CmsVfsSitemapService();
          service.setCms(CmsFlexController.getCmsObject(request));
          service.setRequest(request);
          CmsSitemapData result = null;
          try {
              result = service.prefetch(sitemapUri);
          } finally {
              service.clearThreadStorage();
          }
          return result;
      }