如何将LargestUndimmedDetentIdentifier与自定义图纸演示高度配合使用？
我有一个UISheetPresentationController，它有两个自定义制动器，但我不知道如何与下面的内容交互。

UISheetPresentationController sheet = NavigationController!.SheetPresentationController!;
        sheet.PrefersGrabberVisible = true;
        sheet.PrefersScrollingExpandsWhenScrolledToEdge = false;
        sheet.WidthFollowsPreferredContentSizeWhenEdgeAttached = true;
        sheet.Delegate = new SheetPresentationControllerDelegate();
        UISheetPresentationControllerDetent smallDetent = UISheetPresentationControllerDetent.Create("small", _ => 60);
        UISheetPresentationControllerDetent msmallPlusDetent = UISheetPresentationControllerDetent.Create("smallPlus", _ => 350);
        sheet.Detents = new UISheetPresentationControllerDetent[]
        {
            smallDetent,
            msmallPlusDetent
        };
        sheet.LargestUndimmedDetentIdentifier = ????; (what can I put here?)