code: public String getAction() {
          if (action == null) {
              HelpModule module = HelpModule.getModule(id);
              action = module == null ? ""
                      : "groovy:" + CareWebUtil.class.getName() + ".showHelpTopic(\"" + id + "\",\""
                              + (topic == null ? "" : topic) + "\",\"" + module.getTitle() + "\");";
          }
          
          return action;
      }
docs: Returns the action that will be invoked when the associated menu item is clicked. For
  externally derived help content, this value must be explicitly set. Otherwise, it will be
  determined automatically from the specified help module.
  
  @return The action to be invoked to display the help content. This may be a url or a groovy
  script action.