public void destroy() {
		getInputMap().clear();
		getActionMap().clear();
		booleanSwitches.clear();
		multipleChoices.clear();
		if (viewProp != null) {
			viewProp.destroy();
			viewProp = null;
		}
		if (modelProp != null) {
			modelProp.destroy();
			modelProp = null;
		}
		energizer = null;
		steeringForceController = null;
		undoUIComponent = null;
		redoUIComponent = null;
	}