PropertyHandle propHandle = getPropertyHandle( Style.MAP_RULES_PROP );
PropertyHandle propHandle = getPropertyHandle( IStyleModel.MAP_RULES_PROP );
	public Iterator mapRulesIterator( )	{		PropertyHandle propHandle = getPropertyHandle( Style.MAP_RULES_PROP );		if ( propHandle == null )			return Collections.EMPTY_LIST.iterator( );		return propHandle.iterator( );	}