public function parse($file)
    {
        $result = null;
        $this->hook->attach('help.render.before', $file, $result, $this);

        if (isset($result)) {
            return (string) $result;
        }

        $result = $this->markdown->render(file_get_contents($file));
        $this->hook->attach('help.render.after', $file, $result, $this);
        return (string) $result;
    }