public function getOptionsByLang($lang = 'en')
    {
        $finalOptions = [];

        foreach ($this->getOptions() as $options) {
            foreach ($options as $option) {
                if ($option->lang == $lang || $option->isPlain) {
                    $finalOptions[] = $option;
                }
            }
        }

        return empty($finalOptions) ? null : $finalOptions;
    }