private String getIconName(Icon icon) {
		if (icon == null) {
			return null;
		}

		String iconName = ResourceManager.getIconName(icon);
		if (iconName == null) {
			return null;
		}

		int index = iconName.lastIndexOf('/');
		if (index != -1) {
			return iconName.substring(index + 1);
		}
		return iconName;
	}
Cleans up any resources used by the action.
Ghidra/Framework/Docking/src/main/java/docking/action/DockingAction.java