String str = ele.getStringProperty( this, propName ); if ( str != null ) rtnList.add( str );
Object obj = ele.getProperty( this, propName ); if ( obj != null ) rtnList.add( obj );
	public List collectPropValues( int slotId, String propName )	{		List rtnList = new ArrayList( );		ContentIterator contents = new ContentIterator( this, slotId );		while ( contents.hasNext( ) )		{			DesignElement ele = (DesignElement) contents.next( );			String str = ele.getStringProperty( this, propName );			if ( str != null )				rtnList.add( str );		}		return rtnList;	}