private final EventHandler closePartEventHandler = new EventHandler() {
	@Override
	public void handleEvent(Event event) {
		Object part = event.getProperty(UIEvents.EventTags.ELEMENT);
		boolean toBeRendered = (Boolean) event.getProperty(UIEvents.EventTags.NEW_VALUE);
		if (!toBeRendered && part instanceof MPart && profileEditors.containsValue(part)) {
			profileEditors.values().remove(part);
		}
	}
};

@PostConstruct
private void subscribe(IEventBroker eventBroker) {
	eventBroker.subscribe(UIElement.TOPIC_TOBERENDERED, closePartEventHandler);
}

@PreDestroy
private void unsubscribe(IEventBroker eventBroker) {
	eventBroker.unsubscribe(closePartEventHandler);
}