docs: @NonNull
      private static ObservableTransformer<Observable<byte[]>, PresenterEvent> transformToNotificationPresenterEvent(Type type) {
          return observableObservable -> observableObservable
                  .flatMap(observable -> observable
                          .map(bytes -> ((PresenterEvent) new ResultEvent(bytes, type)))
                  )
                  .onErrorReturn(throwable -> new ErrorEvent(throwable, type));
      }