如何让用户取消我的AutoCAD命令

[CommandMethod("test", CommandFlags.Session)]
    public void Test()
    {
        PromptPointOptions getPointOptions = new PromptPointOptions("Select the top-left location for the view: ");
        Document currentDocument = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
        PromptPointResult getPointResult = currentDocument.Editor.GetPoint(getPointOptions);

        if (getPointResult.Status == PromptStatus.OK)
        {
            //Do work
        }
        else
        {
            //what to do if 'ESC' is pressed during GetPoint()
        }
    }