mageekguy\atoum\iterators\filters\recursives\extension::__construct PHP Method

    public function __construct($mixed, array $acceptedExtensions = array(), \closure $iteratorFactory = null)
    {
        if ($mixed instanceof \recursiveIterator) {
            parent::__construct($mixed);
        } else {
            parent::__construct(call_user_func($iteratorFactory ?: function ($path) {
                return new \recursiveDirectoryIterator($path);
            }, (string) $mixed));
        }
        $this->setAcceptedExtensions($acceptedExtensions);
    }