if (graphic4a instanceof SVGGraphic) {
final SVGGraphic svgGraphic = (SVGGraphic) graphic4a;
return new SvgPdf(svgGraphic);
}
if (graphic4a instanceof MathGraphic4a) {
final MathGraphic4a mathGraphic = (MathGraphic4a) graphic4a;
return new SvgPdf(mathGraphic.getSvgGraphic());
}
return null;
}