runtime/observatory/lib/src/models/objects/notification.dart

// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file

part of models;

abstract class Notification {}

abstract class ExceptionNotification implements Notification{
  Exception get exception;
  /// [optional]
  StackTrace get stacktrace;
}

abstract class EventNotification implements Notification{
  Event get event;
}