private function _getTranslators($file)
    {
        $subject = file_get_contents($file);
        preg_match_all($this->module->patternArrayTranslator, $subject, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
        $translators = [];
        foreach ($matches as $data) {
            if (isset($data['translator'][0])) {
                $translators[$data['translator'][0]] = true;
            }
        }

        return array_keys($translators);
    }