Kdyby\Translation\Translator::assertValidLocale PHP Method

    protected function assertValidLocale($locale)
    {
        if (preg_match('~^[a-z0-9@_\\.\\-]*\\z~i', $locale) !== 1) {
            throw new \InvalidArgumentException(sprintf('Invalid "%s" locale.', $locale));
        }
    }

 protected function assertValidLocale($locale)
 {
     try {
         parent::assertValidLocale($locale);
     } catch (InvalidArgumentException $ex) {
     }
 }