docs: public NotificationChain basicSetRight(Keyword newRight, NotificationChain msgs) {
  		Keyword oldRight = right;
  		right = newRight;
  		if (eNotificationRequired()) {
  			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, XtextPackage.CHARACTER_RANGE__RIGHT, oldRight, newRight);
  			if (msgs == null) msgs = notification; else msgs.add(notification);
  		}
  		return msgs;
  	}