code: private static String appendLinkParams(String pointerLink, HttpServletRequest req) {
  
          String result = pointerLink;
          if (isRequestParamSupportEnabled()) {
              Map<String, String[]> params = req.getParameterMap();
              if (params.size() > 0) {
                  result = CmsRequestUtil.appendParameters(result, params, false);
              }
          }
          return result;
      }
docs: Internal helper that is used by
  <code>{@link #load(CmsObject, CmsResource, HttpServletRequest, HttpServletResponse)}</code>
  and
  <code>{@link #export(CmsObject, CmsResource, HttpServletRequest, HttpServletResponse)}</code>
  to handle conditional request parameter support for links to pointer
  resources.
  <p>
  
  @param pointerLink
  the link to append request parameters to
  
  @param req
  the original request to the pointer
  
  @return the pointer with the parameters