/**
* Run a term vectors query against the index and return the result.
*
* @param RequestInterface $request The spellcheck request.
*
* @return array
*/
private function getTermVectors(RequestInterface $request)
{
$termVectorsQuery = ['index' => $request->getIndex(), 'type' => $request->getType(), 'id' => '', 'term_statistics' => true];
$termVectorsQuery['body']['doc'] = [MappingInterface::DEFAULT_SPELLING_FIELD => $request->getQueryText()];
return $this->client->termvectors($termVectorsQuery);
}