private boolean isTransitionCode(CodeUnit cu) {
		CodeUnit previous = getPreviousCodeUnit(cu);
		if (cu instanceof Instruction) {
			return !(previous instanceof Instruction);
		}
		return !(previous instanceof Data);
	}
Get a stars string based upon the available width.
@return string of '*'s
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/field/PlateFieldFactory.java