public static Task <bool> HeightRequestTo(
     this VisualElement view,
     double height,
     uint length   = 250,
     Easing easing = null)
 {
     return(view.AnimateTo(
                view.HeightRequest,
                height,
                nameof(HeightRequestTo),
                (v, value) => v.HeightRequest = value,
                length,
                easing));
 }