/**
  * @inheritdoc
  *
  * @param AbstractSearchPayload $payload
  */
 protected function getExpectedPayloadData(PayloadInterface $payload)
 {
     return ['query' => $payload->getQuery(), 'page' => $payload->getPage(), 'count' => $payload->getCount(), 'highlight' => $payload->getHighlight(), 'sort' => $payload->getSort(), 'sort_dir' => $payload->getSortDir()];
 }