public function isValidEntryIdentifier($identifier)
    {
        if (false === GeneralUtility::isValidUrl($identifier)) {
            return false;
        }
        $urlParts = \parse_url($identifier);
        $required = ['host', 'path', 'scheme'];
        foreach ($required as $item) {
            if (!isset($urlParts[$item]) || \mb_strlen($urlParts[$item]) <= 0) {
                return false;
            }
        }

        return true;
    }