public static void shutdownNow() {
		CachedScheduler oldElastic = CACHED_ELASTIC.getAndSet(null);
		CachedScheduler oldParallel = CACHED_PARALLEL.getAndSet(null);
		CachedScheduler oldSingle = CACHED_SINGLE.getAndSet(null);

		if (oldElastic != null) oldElastic._dispose();
		if (oldParallel != null) oldParallel._dispose();
		if (oldSingle != null) oldSingle._dispose();
	}
public static void shutdownNow() {
		CachedScheduler oldElastic = CACHED_ELASTIC.getAndSet(null);
		CachedScheduler oldParallel = CACHED_PARALLEL.getAndSet(null);
		CachedScheduler oldSingle = CACHED_SINGLE.getAndSet(null);

		if (oldElastic != null) oldElastic._dispose();
		if (oldParallel != null) oldParallel._dispose();
		if (oldSingle != null) oldSingle._dispose();
	}
public static void shutdownNow ( ) { CachedScheduler oldElastic = CACHED_ELASTIC . getAndSet ( null ) ; CachedScheduler oldParallel = CACHED_PARALLEL . getAndSet ( null ) ; CachedScheduler oldSingle = CACHED_SINGLE . getAndSet ( null ) ; if ( oldElastic != null ) oldElastic . _dispose ( ) ; if ( oldParallel != null ) oldParallel . _dispose ( ) ; if ( oldSingle != null ) oldSingle . _dispose ( ) ; }
Clear any cached {@link Scheduler} and call dispose on them.
Clear any cached {