if ( designHandle instanceof DataItemHandle )
if ( designHandle instanceof DataItemHandle && ( (DataItemHandle) designHandle ).getColumnBindings( ) .iterator( ).hasNext( ) )
	private void fillExpression( Combo control )	{		String te = "";//$NON-NLS-1$		if ( handle != null )		{			te = handle.getTestExpression( );		}		// String te = provider.getTestExpression( );		if ( designHandle instanceof DataItemHandle )		{			control.add( VALUE_OF_THIS_DATA_ITEM );		}		control.add( DEUtil.resolveNull( te ) );		control.select( control.getItemCount( ) - 1 );	}