Method register

jnode-core/src/jnode/event/Notifier.java:35–44

(Class<? extends IEvent> clazz, IEventHandler handler)

	}

	public void register(Class<? extends IEvent> clazz, IEventHandler handler) {
		if (clazz != null && handler != null) {
			List<IEventHandler> list = notifyMap.get(clazz);
			if (list == null) {
				list = new ArrayList<>();
			}
			list.add(handler);
			notifyMap.put(clazz, list);
		}
	}

	public void unregister(Class<? extends IEvent> clazz, IEventHandler handler) {
		if (clazz != null && handler != null) {