public function setFiles()
    {
        $this->files = [];
        $path = $this->getValue();

        if (!preg_match('#^/#', $path)) {
            $path = $this->parser->getServer()->getPrefix().'/'.$path;
        }

        $iterator = new GlobIterator($path);
        foreach ($iterator as $path) {
            $this->files[] = $path;
        }

        return $this;
    }