code: public static String wpLabelTagAction(String label, ServletRequest req) {
  
          CmsObject cms = CmsFlexController.getCmsObject(req);
          CmsMessages messages = OpenCms.getWorkplaceManager().getMessages(cms.getRequestContext().getLocale());
          return messages.key(label);
      }
docs: Internal action method.<p>
  
  @param label the label to look up
  @param req the current request
  @return String the value of the selected label