public function getIndexQueueConfigurationRecursiveUpdateFields($configurationName, $defaultIfEmpty = [])
    {
        $path = 'plugin.tx_solr.index.queue.' . $configurationName . '.recursiveUpdateFields';
        $recursiveUpdateFieldsString = $this->getValueByPathOrDefaultValue($path, '');
        if (trim($recursiveUpdateFieldsString) === '') {
            return $defaultIfEmpty;
        }
        $recursiveUpdateFields = GeneralUtility::trimExplode(',', $recursiveUpdateFieldsString);
        // For easier check later on we return an array by combining $recursiveUpdateFields
        return array_combine($recursiveUpdateFields, $recursiveUpdateFields);
    }