struct UserAuthAdapter : RequestAdapter {
  func onResponse(response: URLResponse?, data: Data?) {
    if let urlResponse = response as? HTTPURLResponse {
      UserAuthData.saveToRepositoryFrom(urlResponse: urlResponse)
    }
  }
}

  private var adapters: [RequestAdapter]

  self.adapters.forEach { $0.beforeSend(dataRequest.request) }

  guard let data = data.data else {
    let error = data.error ?? AFError.explicitlyCancelled
    self.adapters.forEach { $0.onError(request: dataRequest.request, error: error) }