code: public function setRequest(Request $request)
      {
          @trigger_error(sprintf('The %s() method is deprecated since version 2.3 and will be removed in 3.0. Pass a RequestStack in the constructor instead.', __METHOD__), E_USER_DEPRECATED);
  
          $this->request = $request;
      }
docs: Sets the request against which the menu should be matched.
  
  This Request is ignored in case a RequestStack is passed in the constructor.
  
  @deprecated since version 2.3. Pass a RequestStack to the constructor instead.
  
  @param Request $request