PHPOffice / PhpSpreadsheet

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

        }

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

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

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

                $objWriter->writeAttribute('blurRad', $majorGridlines->getShadowProperty('blur'));

            }

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

                $objWriter->writeAttribute('dist', $majorGridlines->getShadowProperty('distance'));

            }

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

                $objWriter->writeAttribute('dir', $majorGridlines->getShadowProperty('direction'));

            }

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

                $objWriter->writeAttribute('algn', $majorGridlines->getShadowProperty('algn'));

            }

            if ($majorGridlines->getShadowProperty(['size', 'sx']) !== null) {

                $objWriter->writeAttribute('sx', $majorGridlines->getShadowProperty(['size', 'sx']));

            }

            if ($majorGridlines->getShadowProperty(['size', 'sy']) !== null) {

                $objWriter->writeAttribute('sy', $majorGridlines->getShadowProperty(['size', 'sy']));

            }

            if ($majorGridlines->getShadowProperty(['size', 'kx']) !== null) {

                $objWriter->writeAttribute('kx', $majorGridlines->getShadowProperty(['size', 'kx']));

            }

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

                $objWriter->writeAttribute('rotWithShape', $majorGridlines->getShadowProperty('rotWithShape'));

            }

            $objWriter->startElement("a:{$majorGridlines->getShadowProperty(['color', 'type'])}");

            $objWriter->writeAttribute('val', $majorGridlines->getShadowProperty(['color', 'value']));

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

            $objWriter->writeAttribute('val', $majorGridlines->getShadowProperty(['color', 'alpha']));

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

            $objWriter->endElement(); //end color:type

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

        }

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

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

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

            }

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

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

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

                    $objWriter->writeAttribute('blurRad', $minorGridlines->getShadowProperty('blur'));

                }

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

                    $objWriter->writeAttribute('dist', $minorGridlines->getShadowProperty('distance'));

                }

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

                    $objWriter->writeAttribute('dir', $minorGridlines->getShadowProperty('direction'));

                }

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

                    $objWriter->writeAttribute('algn', $minorGridlines->getShadowProperty('algn'));

                }

                if ($minorGridlines->getShadowProperty(['size', 'sx']) !== null) {

                    $objWriter->writeAttribute('sx', $minorGridlines->getShadowProperty(['size', 'sx']));

                }

                if ($minorGridlines->getShadowProperty(['size', 'sy']) !== null) {

                    $objWriter->writeAttribute('sy', $minorGridlines->getShadowProperty(['size', 'sy']));

                }

                if ($minorGridlines->getShadowProperty(['size', 'kx']) !== null) {

                    $objWriter->writeAttribute('kx', $minorGridlines->getShadowProperty(['size', 'kx']));

                }

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

                    $objWriter->writeAttribute('rotWithShape', $minorGridlines->getShadowProperty('rotWithShape'));

                }

                $objWriter->startElement("a:{$minorGridlines->getShadowProperty(['color', 'type'])}");

                $objWriter->writeAttribute('val', $minorGridlines->getShadowProperty(['color', 'value']));

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

                $objWriter->writeAttribute('val', $minorGridlines->getShadowProperty(['color', 'alpha']));

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

                $objWriter->endElement(); //end color:type

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

            }

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

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

            $objWriter->endElement();

        }

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

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

            if ($xAxis->getShadowProperty('blur') !== null) {

                $objWriter->writeAttribute('blurRad', $xAxis->getShadowProperty('blur'));

            }

            if ($xAxis->getShadowProperty('distance') !== null) {

                $objWriter->writeAttribute('dist', $xAxis->getShadowProperty('distance'));

            }

            if ($xAxis->getShadowProperty('direction') !== null) {

                $objWriter->writeAttribute('dir', $xAxis->getShadowProperty('direction'));

            }

            if ($xAxis->getShadowProperty('algn') !== null) {

                $objWriter->writeAttribute('algn', $xAxis->getShadowProperty('algn'));

            }

            if ($xAxis->getShadowProperty(['size', 'sx']) !== null) {

                $objWriter->writeAttribute('sx', $xAxis->getShadowProperty(['size', 'sx']));

            }

            if ($xAxis->getShadowProperty(['size', 'sy']) !== null) {

                $objWriter->writeAttribute('sy', $xAxis->getShadowProperty(['size', 'sy']));

            }

            if ($xAxis->getShadowProperty(['size', 'kx']) !== null) {

                $objWriter->writeAttribute('kx', $xAxis->getShadowProperty(['size', 'kx']));

            }

            if ($xAxis->getShadowProperty('rotWithShape') !== null) {

                $objWriter->writeAttribute('rotWithShape', $xAxis->getShadowProperty('rotWithShape'));

            }

            $objWriter->startElement("a:{$xAxis->getShadowProperty(['color', 'type'])}");

            $objWriter->writeAttribute('val', $xAxis->getShadowProperty(['color', 'value']));

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

            $objWriter->writeAttribute('val', $xAxis->getShadowProperty(['color', 'alpha']));

            $objWriter->endElement();

            $objWriter->endElement();

            $objWriter->endElement();

        }

        if ($xAxis->getSoftEdgesSize() !== null) {

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