docs: public NotificationChain basicSetDuration(Parameter newDuration, NotificationChain msgs) {
  		Parameter oldDuration = duration;
  		duration = newDuration;
  		if (eNotificationRequired()) {
  			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, BpsimPackage.SCENARIO_PARAMETERS__DURATION, oldDuration, newDuration);
  			if (msgs == null) msgs = notification; else msgs.add(notification);
  		}
  		return msgs;
  	}