public IconValue getIcon(String id) {
		return iconMap.get(id);
	}
Returns the current {@link IconValue} for the given id or null if none exists.
@param id the id to look up a icon for
@return the current {@link IconValue} for the given id or null if none exists.
Ghidra/Framework/Gui/src/main/java/generic/theme/GThemeValueMap.java