private abstract class RequestFactoryAdapter<T> {

  lateinit var paginator: Paginator<T>

  abstract fun loadPage(page: Int)

  protected fun onSuccess(data: List<T>) {
    paginator.currentState.newData(data)
  }

  protected fun onError(error: Throwable) {
    Timber.e("strange error")
    Timber.e(error)
    paginator.currentState.fail(error)
  }
}