private function setJavascriptFileCDNjQueryLibs($jsFileName)
    {
        $sFN    = $this->sanitizeString($jsFileName);
        $eArray = $this->knownCloudFlareJavascript($sFN);
        if (!is_null($eArray['version'])) {
            return [
                true,
                $this->sCloundFlareUrl . $eArray['version'] . $eArray['justFile'],
                '<script>' . $eArray['eVerify'] . ' || document.write(\'<script src="' . $sFN
                . '">\x3C/script>\')</script>',
            ];
        }
        return null;
    }