protected function processVersion($errorPos)
    {
        $version = $this->commentParser->getVersion();
        if ($version !== null) {
            $content = $version->getContent();
            $matches = array();
            if (empty($content) === true) {
                $error = 'Content missing for @version tag in file comment';
                $this->currentFile->addError($error, $errorPos);
            }
        }
    }