Assert.isLegal( handle instanceof ReportItemHandle || handle instanceof GroupHandle ); if ( handle instanceof GroupHandle ) { return ( (GroupHandle) handle ).addColumnBinding( column, inForce ); }
Assert.isLegal( handle instanceof ReportItemHandle );
	public static ComputedColumnHandle addColumn( DesignElementHandle handle,			ComputedColumn column, boolean inForce ) throws SemanticException	{		Assert.isLegal( handle instanceof ReportItemHandle				|| handle instanceof GroupHandle );		if ( handle instanceof GroupHandle )		{			return ( (GroupHandle) handle ).addColumnBinding( column, inForce );		}		return ( (ReportItemHandle) handle ).addColumnBinding( column, inForce );	}