@type t() :: %Twilio.Resources.Routes.V2.SipDomain{
  account_sid: String.t() | nil,
  date_created: String.t() | nil,
  date_updated: String.t() | nil,
  friendly_name: String.t() | nil,
  sid: String.t() | nil,
  sip_domain: String.t() | nil,
  url: String.t() | nil,
  voice_region: String.t() | nil
}