private static void parseOverlayModifiers(IconModifier modifier, String overlayValuesString)
			throws ParseException {
		List<String> overlayModifierStrings =
			ThemeValueUtils.parseGroupings(overlayValuesString, '{', '}');
		for (String overlayIconString : overlayModifierStrings) {
			IconValue overlayIconValue = IconValue.parse("", overlayIconString);
			modifier.addOverlayIcon(overlayIconValue);
		}
	}
Parses the given string as one or more icon modifiers
@param iconModifierString the string to parse as modifiers
@return an IconModifier as specified by the given string
@throws ParseException if the iconModifierString in not properly formatted icon modifier
Ghidra/Framework/Gui/src/main/java/generic/theme/IconModifier.java