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

    public abstract function purgeIndex($type);

 /**
  * Purges all contents from the index
  *
  * @todo: Make this public API?
  *
  * @return void
  */
 public function purgeIndex()
 {
     $this->gateway->purgeIndex("location");
 }