code: public function postAction(Request $request)
      {
          try {
              $data = $this->get('ongr_api.batch_request_handler')->handleRequest(
                  $request,
                  $repository = $this->getRequestRepository($request),
                  'create'
              );
              return $this->renderRest($request, $data, Response::HTTP_OK);
          } catch (\Exception $e) {
              return $this->renderError($request, $e->getMessage(), Response::HTTP_BAD_REQUEST);
          }
      }
docs: Action to process create batch call.
  
  @param Request $request
  @return Response