Sokil\Mongo\Structure::mergeUnmodifiedPartial PHP Метод

    private function mergeUnmodifiedPartial(array &$target, array $source)
    {
        foreach ($source as $key => $value) {
            if (is_array($value) && isset($target[$key])) {
                $this->mergeUnmodifiedPartial($target[$key], $value);
            } else {
                $target[$key] = $value;
            }
        }
    }