System.Reactive.Subjects.AsyncSubject<T>
namespace System.Reactive.Subjects
{
public sealed class AsyncSubject<[Nullable(2)] T> : SubjectBase<T>, INotifyCompletion
{
public bool IsCompleted { get; }
public AsyncSubject();
public AsyncSubject<T> GetAwaiter();
public void OnCompleted(Action continuation);
public T GetResult();
}
}