Sulu\Bundle\GeneratorBundle\Command\Validators::validateFormat PHP Метод

    public static function validateFormat($format)
    {
        $format = strtolower($format);
        if (!in_array($format, ['php', 'xml', 'yml', 'annotation'])) {
            throw new \RuntimeException(sprintf('Format "%s" is not supported.', $format));
        }
        return $format;
    }