public function getEnabledIndexQueueConfigurationNames($defaultIfEmpty = [])
    {
        $tablesToIndex = [];
        $path = 'plugin.tx_solr.index.queue.';
        $indexQueueConfiguration = $this->getObjectByPathOrDefault($path, []);
        foreach ($indexQueueConfiguration as $configurationName => $indexingEnabled) {
            if (substr($configurationName, -1) != '.' && $indexingEnabled) {
                $tablesToIndex[] = $configurationName;
            }
        }

        return count($tablesToIndex) == 0 ? $defaultIfEmpty : $tablesToIndex;
    }