docs: private String getElementInfo(CmsObject cms, CmsContainerElementBean elementBean, CmsContainerPageBean page)
      throws Exception {
  
          return CmsContainerpageService.getSerializedElementInfo(
              cms,
              (HttpServletRequest)pageContext.getRequest(),
              (HttpServletResponse)pageContext.getResponse(),
              elementBean,
              page);
      }