docs: public NotificationChain basicSetQuantity(Parameter newQuantity, NotificationChain msgs) {
  		Parameter oldQuantity = quantity;
  		quantity = newQuantity;
  		if (eNotificationRequired()) {
  			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, BpsimPackage.RESOURCE_PARAMETERS__QUANTITY, oldQuantity, newQuantity);
  			if (msgs == null) msgs = notification; else msgs.add(notification);
  		}
  		return msgs;
  	}