/**
* Extract and build aggregations of the search request.
*
* @param RequestInterface $request Search request.
*
* @return array
*/
private function getAggregations(RequestInterface $request)
{
$aggregations = [];
if ($request->getAggregation()) {
$aggregations = $this->aggregationBuilder->buildAggregations($request->getAggregation());
}
return $aggregations;
}
