public static IObservable <CustomizeShowViewParametersEventArgs> ShowNonModalNestedListViewPopup(
this DetailView detailView, params Type[] objectTypes)
=> detailView.NestedListViews(objectTypes)
.SelectMany(editor => editor.Frame.GetController <ListViewProcessCurrentObjectController>()
.WhenEvent(nameof(ListViewProcessCurrentObjectController.CustomizeShowViewParameters))
.Select(pattern => pattern.EventArgs).Cast <CustomizeShowViewParametersEventArgs>()
.Do(e => e.ShowViewParameters.TargetWindow = TargetWindow.NewWindow));