public synchronized boolean register(EventHandler handler)
	{
		boolean result = handlers.add(handler);
		handlersByEvent.clear();
		return result;
	}
public synchronized boolean register(EventHandler handler)
	{
		boolean result = handlers.add(handler);
		handlersByEvent.clear();
		return result;
	}
public synchronized boolean register ( EventHandler handler ) { boolean result = handlers . add ( handler ) ; handlersByEvent . clear ( ) ; return result ; }
SECTION: INSTANCE METHODS
SECTION : INSTANCE METHODS