ReactiveX.iodocumentation使用AnonymousDisposable，它在RxSwift2.x中，但在RxSwift3.0中是一个未解析的标识符。我应该改用什么？letsource=Observable.create{observerinforiin1...5{observer.on(.Next(i))}observer.on(.Completed)//Notethatthisisoptional.Ifyourequirenocleanupyoucanreturn//NopDisposable.instancereturnAnonymousDisposable{