code: public function onlineHelpAction(Request $request) {
  		$template = $this->searchService->getOnlineHelp($request->getLocale(), $this->getDefaultLocale());
  		return $this->render($template ?: 'StingerSoftEntitySearchBundle:Help:no_help.html.twig');
  	}
docs: Provides an online help for the configured search service.
  If the search service has no online help defined a warning message will be displayed to the user.
  
  @param Request $request
  @return \Symfony\Component\HttpFoundation\Response