private function getAdminListHeader(stdClass $data)
    {
        $output = '';
        $model = $data->mainModel;

        //getting parameters which are not multilanguage
        $output .= $this->gatherHeaders($model, array_merge($this->getAutoFill(), ['id']), $data->translationsLocation, false);

        //getting parameters which are not multilanguage
        if( isset($model->multiLanguage) )
            $output .= $this->gatherHeaders($model->multiLanguage, array_merge($this->getAutoFill(), ['id', 'language_code', 'record_id']), $data->translationsLocation, true);

        return $output;
    }