@Override
	public synchronized void refresh() {
	
		IntervalProperty[] properties = getProperties();
		
		for(IntervalProperty p : properties ) {
			
			p.refresh();
		}
		
	}
@ Override public synchronized void refresh ( ) { IntervalProperty [ ] properties = getProperties ( ) ; for ( IntervalProperty p : properties ) { p . refresh ( ) ; } }
Signal properties to update themselves.