aves_mio0.31/lib/widgets/common/basic/draggable_scrollbar/notifications.dart

import 'package:flutter/widgets.dart';

@immutable
class DraggableScrollbarNotification extends Notification {
  final DraggableScrollbarEvent event;

  const DraggableScrollbarNotification(this.event);
}

enum DraggableScrollbarEvent { dragStart, dragEnd }