   defp process_page({items, next_page_url, module}) do
     {items, {nil, next_page_url, module}}
   end
+
+  defp next_page_url(uri), do: "https://#{Config.api_domain}" <> uri
 end

    {:halt, nil}
  end

  defp process_page({nil, next_page_url, module}) do
    next_page_url
    |> fetch_page(module)
    |> process_page
  end

  alias ExTwilio.Api
  alias ExTwilio.Parser
  alias ExTwilio.UrlGenerator
  alias ExTwilio.Config

  @type url :: String.t

