Toasync

Observable.ToAsync(Action)
Observable.ToAsync<T, TResult>(Func<T, TResult>)
Observable.ToAsync<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16>(Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16>)
Observable.ToAsync<TResult>(Func<TResult>)
Observable.ToAsync<TSource>(Action<TSource>, IScheduler)
Qbservable.ToAsync(IQbservableProvider, Expression<Action>)
Qbservable.ToAsync<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, TResult>(IQbservableProvider, Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, TResult>>, IScheduler)
Qbservable.ToAsync<TResult>(IQbservableProvider, Expression<Func<TResult>>)
Qbservable.ToAsync<TSource, TResult>(IQbservableProvider, Expression<Func<TSource, TResult>>)
Qbservable.ToAsync<TSource>(IQbservableProvider, Expression<Action<TSource>>)