protected function lint(OutputInterface $output, Ciconia $ciconia, $content)
    {
        try {
            $ciconia->render($content, array('strict' => true));
            $output->writeln('No syntax errors detected.');

            return 0;
        } catch (SyntaxError $e) {
            $output->writeln('<error>' . $e->getMessage() . '</error>');

            return 1;
        }
    }