void paint(Graphics2D g2, Color fgColor, Color bgColor) {
		if (arrowBody == null) {
			createShapes();
		}

		doPaint(g2, fgColor, bgColor);
	}
The shape of the arrow body, but with added size
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/flowarrow/FlowArrow.java