Doctrine\Search\ElasticSearch\Client::buildQuery PHP Method

    protected function buildQuery(array $classes)
    {
        $searchQuery = new Search($this->client);
        $searchQuery->setOption(Search::OPTION_VERSION, true);
        foreach ($classes as $class) {
            if ($class->index) {
                $indexObject = $this->getIndex($class->index);
                $searchQuery->addIndex($indexObject);
                if ($class->type) {
                    $searchQuery->addType($indexObject->getType($class->type));
                }
            }
        }
        return $searchQuery;
    }