public function shift($count = 1)
    {
        $return = array();

        if ($count == 1) {
            return array_shift($this->dirParts);
        }

        for ($i=0; $i<$count; $i++) {
            $value = array_shift($this->dirParts);

            if ($value === null) {
                break;
            }

            $return[] = $value;
        }

        return $return;
    }