yii\mongodb\QueryBuilder::listDatabases PHP 메소드

    public function listDatabases($condition = [], $options = [])
    {
        $document = array_merge(['listDatabases' => 1], $options);
        if (!empty($condition)) {
            $document['filter'] = (object) $this->buildCondition($condition);
        }
        return $document;
    }