   @base_url "https://lookups.twilio.com/v1/PhoneNumbers/"
 
   defmodule PhoneNumber do
+    @moduledoc false
     defstruct url: nil,
               carrier: nil,
               national_format: nil,

defmodule ExTwilio.Lookup do
  @moduledoc """
    Repersents the Lookup Api provided by Twilio

    - [Twilio docs](https://www.twilio.com/docs/api/lookups)
  """

    {:ok, info} = ExTwilio.Lookup.retrieve("12345678910", [Type: carrier])
  """
  def retrieve(phone_number, query \\ []) do
    auth = [basic_auth: {Config.account_sid, Config.auth_token}]
    query_string = "?" <> Url.to_query_string(query)

    "#{@base_url}#{phone_number}#{query_string}"
