public function parse(Twig_Token $token)
    {
        $line = $token->getLine();

        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);

        $body = $this->parser->subparse(function(Twig_Token $token)
        {
            return $token->test('endmarkdown');
        }, true);

        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);

        return new Node($body, $line, $this->getTag());
    }