code: protected function saveAfterLogin(Request $httpRequest)
      {
          $referer = $httpRequest->headers->get("referer", null, true);
          $afterLogin = Utils::getRefererQueryParam($referer, "afterLogin");
          if ($afterLogin && Utils::isValidPageId($afterLogin)) {
              $this->session->set("afterLogin", $afterLogin);
          }
      }
docs: Saves the afterLogin parameter
  
  @param Request $httpRequest