gistfile1.cs

public IObservable<IObservedChange<object, object>> Changed {
    get { return _reactiveHelper.Changed; }
}

public IObservable<IObservedChange<object, object>> Changing {
    get { return _reactiveHelper.Changing; }
}

public IDisposable SuppressChangeNotifications() {
    return _reactiveHelper.SuppressChangeNotifications();
}

public event PropertyChangingEventHandler PropertyChanging;