Webiny\Component\Mongo\Mongo::createIndexes PHP Method

    public function createIndexes($collectionName, array $indexes)
    {
        $mongoIndexes = [];
        /* @var $index IndexInterface */
        foreach ($indexes as $index) {
            $mongoIndexes[] = ['key' => $index->getFields()] + $index->getOptions();
        }
        return $this->bridge->createIndexes($this->cName($collectionName), $mongoIndexes);
    }