Icon getIcon(boolean disabled) {
		if (disabled) {
			if (disabledIcon == null) {
				disabledIcon = generateIcon(true);
			}
			return disabledIcon;
		}
		if (icon == null) {
			icon = generateIcon(false);
		}
		return icon;
	}
Get the state based Icon image for the domain file based upon its content class.
@param disabled true if the icon return should be rendered as 
not enabled
@return image icon
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/GhidraFileData.java