code: public void afterCompleted(Event event) {
  		ChaincodeMessage message = messageHelper(event);
  		logger.debug(String.format("[%s]sending COMPLETED to validator for tid", shortID(message)));
  		try {
  			serialSend(message);
  		} catch (Exception e) {
  			event.cancel(new Exception("send COMPLETED failed %s", e));
  		}
  	}
docs: afterCompleted will need to handle COMPLETED event by sending message to the peer