protected function sanitizeXml($xml)
    {
        // Sanitize the XML if requested:
        $newXML = trim(preg_replace($this->sanitizeRegex, ' ', $xml, -1, $count));

        if ($count > 0 && $this->badXmlLog) {
            $this->logBadXML($xml);
        }

        return $newXML;
    }