eZ\Publish\Core\Search\Elasticsearch\Content\Gateway::index PHP Method

    public abstract function index(Document $document);

 /**
  * Indexes a Location in the index storage
  *
  * @param \eZ\Publish\SPI\Persistence\Content\Location $location
  */
 public function indexLocation(Location $location)
 {
     $document = $this->mapper->mapLocation($location);
     $this->gateway->index($document);
 }