GroupedObservable<TKey, TElement> sealed class GroupedObservable<TKey, TElement> : ObservableBase<TElement>, IGroupedObservable<TKey, TElement>, IObservable<TElement> Documentation Code public TKey Key { get; } public GroupedObservable(TKey key, ISubject<TElement> subject, RefCountDisposable refCount) public GroupedObservable(TKey key, ISubject<TElement> subject)