Webmozart\Console\Config\DefaultApplicationConfig::printVersion PHP Method

    public function printVersion(PreHandleEvent $event)
    {
        if ($event->getArgs()->isOptionSet('version')) {
            $version = new NameVersion($event->getCommand()->getApplication()->getConfig());
            $version->render($event->getIO());
            $event->setHandled(true);
        }
    }