private function setJavascriptFileCDNforHighChartsMain($jsFileName, $libName)
    {
        $jsFN            = $this->sanitizeString($jsFileName);
        $jsVersionlessFN = str_replace([$libName . '-', '.js'], '', pathinfo($jsFileName)['basename'])
            . ($libName === 'exporting' ? '/modules' : '');
        if (strpos($jsFileName, $libName) !== false) {
            return [
                true,
                $this->sCloundFlareUrl . 'highcharts/' . $jsVersionlessFN . '/' . $libName . '.js',
                '<script>!window.Highcharts && document.write(\'<script src="' . $jsFN . '">\x3C/script>\')</script>',
            ];
        }
        return null;
    }