void MSBuildTargetFinished(object sender, MSBuildTargetEventArgs e)
        {
            Runtime.AssertMainThread();

            widget.UpdateMSBuildTarget(e.BuildTarget);
        }
        void MSBuildTargetStarted(object sender, MSBuildTargetEventArgs e)
        {
            Runtime.AssertMainThread();

            widget.AddMSBuildTarget(e.BuildTarget);
        }