Synchronization
public static IObservable<TSource> ObserveOn<TSource>(IObservable<TSource> source, IScheduler scheduler)
public static IObservable<TSource> ObserveOn<TSource>(IObservable<TSource> source, SynchronizationContext context)
public static IObservable<TSource> SubscribeOn<TSource>(IObservable<TSource> source, IScheduler scheduler)
public static IObservable<TSource> SubscribeOn<TSource>(IObservable<TSource> source, SynchronizationContext context)