signOutButton.rx.tap
            .flatMap { [weak self] _ -> Single<Result<Void, ApiError>> in
                guard let strongSelf = self else { return Single.just(.failure(.unexpectedError))}
               return strongSelf.viewModel.logout()
            }
            .subscribe(
                onNext: { [weak self] result in
                    if case .success = result {
                        self?.viewModel.router.trigger(.main(mainState: .guest))
                    }
                }
            )
            .disposed(by: disposeBag)