/**
  * Ajax action for listing attributes
  *
  * @param Request $request
  *
  * @return \Symfony\Component\HttpFoundation\JsonResponse|\Symfony\Component\HttpFoundation\RedirectResponse
  */
 public function ajaxIndexAction(Request $request)
 {
     if (!$request->isXmlHttpRequest()) {
         return $this->redirectToAction('index');
     }
     $attributeGroupId = (int) $request->request->get('id');
     return $this->jsonResponse(['attributes' => $this->manager->getAttributeSet($attributeGroupId)]);
 }