func getUsers() -> Observable<[SectionModel<String, User>]> {
    return Observable.create { (observer) -> Disposable in

        let users = [User(followersCount: 1005, followingCount: 495, screenName: "BalestraPatrick"),
                     User(followersCount: 380, followingCount: 5, screenName: "RxSwiftLang"),
                     User(followersCount: 36069, followingCount: 0, screenName: "SwiftLang")]
       let section = [SectionModel(model: "", items: users)]
       observer.onNext(section)
       observer.onCompleted()

   	   return AnonymousDisposable{}
    }
}