let sessions = NFCTagReaderSession.rx.open(pollingOption: [.iso18092])
let tags = sessions.begin().tags().felicaTags()
let connectedTags = Observable.combineLatest(tags, sessions)
    .flatMap { tag, session in session.connect(tag) }
    .share()

let invalidates = connectedTags
    .requestService(nodeCodeList: SERVICE_CODE_LIST)
    .withLatestFrom(connectedTags)
    .readWithoutEncryption(serviceCodeList: SERVICE_CODE_LIST, blockList: BLOCK_LIST })
    .do(onNext: { result in
        // Do something
    })
    .withLatestFrom(sessions)
    .invalidate()
    .first()

button.rx.tap
    .flatMapFirst { invalidates }
    .subscribe()
    .disposed(by: disposeBag)