code: public void notifyCallbacks(final T exchangeOrder) {
  
  		// Notify callbacks async		
  		if(callbacks == null) {
  			return;
  		}
  				
  		synchronized(callbacks) {
  			if(callbacks.isEmpty()) {
  				return;
  			}
  			
  			callbacks.forEach((c) -> {
  				final Runnable runnable = () -> c.accept(exchangeOrder);
  				executorService.submit(runnable);
  			});
  		}
docs: Update a exchange order
  @param exchangeOrder