PHPOffice / PhpSpreadsheet

        }

        $objWriter->startElement('a:effectLst');

        if ($majorGridlines->getGlowSize() !== null) {

            $objWriter->startElement('a:glow');

            $objWriter->writeAttribute('rad', $majorGridlines->getGlowSize());

            $objWriter->startElement("a:{$majorGridlines->getGlowColor('type')}");

            $objWriter->writeAttribute('val', $majorGridlines->getGlowColor('value'));

            $objWriter->startElement('a:alpha');

            $objWriter->writeAttribute('val', $majorGridlines->getGlowColor('alpha'));

            $objWriter->endElement(); //end alpha

            $objWriter->endElement(); //end schemeClr

            $objWriter->endElement(); //end glow

        }

        if ($majorGridlines->getShadowProperty('presets') !== null) {

            $objWriter->startElement("a:{$majorGridlines->getShadowProperty('effect')}");

            $objWriter->startElement('a:effectLst');

            if ($minorGridlines->getGlowSize() !== null) {

                $objWriter->startElement('a:glow');

                $objWriter->writeAttribute('rad', $minorGridlines->getGlowSize());

                $objWriter->startElement("a:{$minorGridlines->getGlowColor('type')}");

                $objWriter->writeAttribute('val', $minorGridlines->getGlowColor('value'));

                $objWriter->startElement('a:alpha');

                $objWriter->writeAttribute('val', $minorGridlines->getGlowColor('alpha'));

                $objWriter->endElement(); //end alpha

                $objWriter->endElement(); //end schemeClr

                $objWriter->endElement(); //end glow

            }

            if ($minorGridlines->getShadowProperty('presets') !== null) {

                $objWriter->startElement("a:{$minorGridlines->getShadowProperty('effect')}");

        $objWriter->startElement('c:spPr');

        if ($xAxis->getFillProperty('value') !== null) {

            $objWriter->startElement('a:solidFill');

            $objWriter->startElement('a:' . $xAxis->getFillProperty('type'));

            $objWriter->writeAttribute('val', $xAxis->getFillProperty('value'));

            $objWriter->startElement('a:alpha');

            $objWriter->writeAttribute('val', $xAxis->getFillProperty('alpha'));

            $objWriter->endElement();

            $objWriter->endElement();

            $objWriter->endElement();

        }

        $objWriter->startElement('a:ln');

        $objWriter->writeAttribute('cap', $xAxis->getLineStyleProperty('cap'));

        $objWriter->writeAttribute('cmpd', $xAxis->getLineStyleProperty('compound'));

        if ($xAxis->getLineProperty('value') !== null) {

            $objWriter->startElement('a:solidFill');

            $objWriter->startElement('a:' . $xAxis->getLineProperty('type'));

            $objWriter->writeAttribute('val', $xAxis->getLineProperty('value'));

            $objWriter->startElement('a:alpha');

            $objWriter->writeAttribute('val', $xAxis->getLineProperty('alpha'));

            $objWriter->endElement();

            $objWriter->endElement();

            $objWriter->endElement();

        }

        $objWriter->startElement('a:prstDash');

        $objWriter->writeAttribute('val', $xAxis->getLineStyleProperty('dash'));