RxJava: How to multicast a Completable?

问题

I have a method which returns a Completable and I want it to be multicasted because any second subscriber should not re-execute the method, instead they should get the same old emitted values. I achieved it using replay().autoConnect() as follows and working as expected

    public Completable init() {
        return repository.init()
                .subscribeOn(Schedulers.io())
                .flatMapCompletable(s -> Completable.fromAction(() -> {
                   // some action
                })).toObservable().replay().autoConnect().ignoreElements();       
        }

As you see, the Completable I'm converting to Observable and after applying replay().autoConnect() again back to Completable using ignoreElements(). It works but, Am I doing it in the proper way?

Is there any shorthand operator that can be used to Completable to directly multicast it?

来源：https://stackoverflow.com/questions/46670909/rxjava-how-to-multicast-a-completable