public static void setExecutorServiceDecorator(String key, BiFunction<Scheduler, ScheduledExecutorService, ScheduledExecutorService> decorator) {
    """
	Set up an additional {@link ScheduledExecutorService} decorator for a given key,
	even if that key is already present. Note that the {@link Factory}'s legacy
	{@link Factory#decorateExecutorService(String, Supplier)} method will always be
	invoked last after applying the decorators added via this method.
	<p>
	The decorator is a {@link BiFunction} taking the Scheduler and the backing
	{@link ScheduledExecutorService} as second argument. It returns the
	decorated {@link ScheduledExecutorService}.
	
	@param key the key under which to set up the decorator
	@param decorator the executor service decorator to add, if key not already present.
	@see #addExecutorServiceDecorator(String, BiFunction)
	@see #removeExecutorServiceDecorator(String)
	@see Schedulers#onScheduleHook(String, Function)
    """
		synchronized (DECORATORS) {
			DECORATORS.put(key, decorator);
		}
	}
public static void setExecutorServiceDecorator(String key, BiFunction<Scheduler, ScheduledExecutorService, ScheduledExecutorService> decorator) {
		synchronized (DECORATORS) {
			DECORATORS.put(key, decorator);
		}
	}
public static void setExecutorServiceDecorator ( String key , BiFunction < Scheduler , ScheduledExecutorService , ScheduledExecutorService > decorator ) { synchronized ( DECORATORS ) { DECORATORS . put ( key , decorator ) ; } }
Set up an additional {@link ScheduledExecutorService} decorator for a given key,
even if that key is already present. Note that the {@link Factory}'s legacy
{@link Factory#decorateExecutorService(String, Supplier)} method will always be
invoked last after applying the decorators added via this method.
<p>
The decorator is a {@link BiFunction} taking the Scheduler and the backing
{@link ScheduledExecutorService} as second argument. It returns the
decorated {@link ScheduledExecutorService}.

@param key the key under which to set up the decorator
@param decorator the executor service decorator to add, if key not already present.
@see #addExecutorServiceDecorator(String, BiFunction)
@see #removeExecutorServiceDecorator(String)
@see Schedulers#onScheduleHook(String, Function)
Set up an additional { @link ScheduledExecutorService } decorator for a given key even if that key is already present . Note that the { @link Factory } s legacy { @link Factory#decorateExecutorService ( String Supplier ) } method will always be invoked last after applying the decorators added via this method . <p > The decorator is a { @link BiFunction } taking the Scheduler and the backing { @link ScheduledExecutorService } as second argument . It returns the decorated { @link ScheduledExecutorService } .