code: private boolean predicateApplies(Subscriber<?> s, Object message) {
  		if (s instanceof PredicatedSubscriber
  				&& !((PredicatedSubscriber<?>) s).appliesO(message)) {
  			return false;
  		}
  		return true;
  	}
docs: Checks to see if the subscriber is a predicated subscriber, and if it
  applies.
  
  @param s
  - The subscriber to check.
  @param message
  - The message to check.
  @return If the subscriber is not predicated or it is and applies, then it
  returns true. If it's a predicated subscriber, and it doesn't
  apply, then it returns false.