Smile\ElasticsuiteCore\Search\RequestInterface::getFilter PHP Méthode

    public function getFilter();

 /**
  * Extract and build the root filter of the search request.
  *
  * @param RequestInterface $request Search request.
  *
  * @return array
  */
 private function getRootFilter(RequestInterface $request)
 {
     $filter = null;
     if ($request->getFilter()) {
         $filter = $this->queryBuilder->buildQuery($request->getFilter());
     }
     return $filter;
 }