protected function writeEtcModules(OutputInterface $output)
{
$outFile = sprintf('%s/app/etc/modules/%s_%s.xml', $this->_magentoRootFolder, $this->vendorNamespace, $this->moduleName);
/** @var $helper TwigHelper */
$helper = $this->getHelper('twig');
$buffer = $helper->render('dev/module/create/app/etc/modules/definition.twig', $this->twigVars);
$size = file_put_contents($outFile, $buffer);
$output->writeln('<info>Created file: <comment>' . $outFile . '<comment> (' . $size . ' bytes)</info>');
}