public static IDisposable Subscribe(FileStatusList obj,
Action<EventHandler> addHandler, Action<EventHandler> removeHandler)
{
IObservable<EventPattern<object>> observe = Observable.FromEventPattern(
addHandler, removeHandler: removeHandler)
//h => FileStatusListView.SelectedIndexChanged += h,
//h => FileStatusListView.SelectedIndexChanged -= h)
.Throttle(FileStatusList.SelectedIndexChangeThrottleDuration)
.ObserveOn(SynchronizationContext.Current);
IDisposable selectedIndexChangeSubscription =
observe.Subscribe(x => obj.FileStatusListView_SelectedIndexChanged());
//IDisposable Subscribe(IObserver<T> observer);
// GenericArguments[1], 'TEventArgs', on 'System.Reactive.IEventPattern`2[TSender,TEventArgs]' violates the constraint of type parameter 'TEventArgs'.
// IDisposable Subscribe<T>(this IObservable<T> source, Action<T> onNext);
return selectedIndexChangeSubscription;
}