@type t() :: %Twilio.Resources.Preview.Wireless.RatePlan{
  account_sid: String.t() | nil,
  data_enabled: boolean() | nil,
  data_limit: integer(),
  data_metering: String.t() | nil,
  date_created: String.t() | nil,
  date_updated: String.t() | nil,
  friendly_name: String.t() | nil,
  international_roaming: list() | nil,
  messaging_enabled: boolean() | nil,
  national_roaming_enabled: boolean() | nil,
  sid: String.t() | nil,
  unique_name: String.t() | nil,
  url: String.t() | nil,
  voice_enabled: boolean() | nil
}