public static function filterStylus(Node $node, $indent, $newLine)
    {

        if (!class_exists('Stylus\\Stylus'))
            throw new Compiler\Exception(
                "Failed to compile Stylus: "
                ."Please install the neemzy/stylus composer package"
            );

        $stylus = new \Stylus\Stylus;
        $css = $stylus->fromString($node->text())->toString();

        return '<style>'.$newLine.$indent.$css.$newLine.$indent.'</style>';
    }