How to Search across multiple ElasticSearch Indexes with Symfony FOS\ElasticaBundle

ElasticSearch v6.0 deprecated multiple types in one index. You can read more here: Removal of mapping types [https://www.elastic.co/guide/en/elasticsearch/reference/6.0/removal-of-types.html] How to deal with this breaking change? Create MultiIndex.php file in your Symfony App project <?php declare(strict_