public function process(array $values)
    {
        $results = [];

        foreach ($values as $value) {
            list($rootPageUid, $mountPoint) = GeneralUtility::trimExplode(',',
                $value, true, 2);
            $results[] = $this->getSolrRootlineForPageId($rootPageUid,
                $mountPoint);
        }

        return $results;
    }