aggregation_builder_example.php

<?php 
$ab = $this->dm->getDocumentCollection('Document\Test')->createAggregationBuilder();
        
if (is_array($filter)) {
    /* Here $filter is an array which could be $qb->getQuery()->getQuery()['query']
     *  or manually crafted 
     * example  [ '$and' => [ 'name' => 'keyword'] ]
     */
    $ab->match(); // <-- how to pass query array to match stage?
} else {
    $ab->match()->text($filter);
}

// more complex things like group, redact, sort are happening and aggregation builder does really well here

$results = $ab->execute();

?>