docs: public CmsContainerElementBean getCurrentElement(ServletRequest req) throws CmsException {
  
          CmsJspStandardContextBean sCBean = CmsJspStandardContextBean.getInstance(req);
          CmsContainerElementBean element = sCBean.getElement();
          if (element == null) {
              throw new CmsException(
                  Messages.get().container(
                      Messages.ERR_READING_ELEMENT_FROM_REQUEST_1,
                      sCBean.getRequestContext().getUri()));
          }
          return element;
      }