@type t() :: %ExCheckout.Shipping.Address{
  address: String.t(),
  address_line_2: nil | String.t(),
  city: String.t(),
  company_name: nil | String.t(),
  country: ISO.country_code(),
  first_name: nil | String.t(),
  last_name: nil | String.t(),
  name: nil | String.t(),
  phone: nil | String.t(),
  postal_code: String.t(),
  state: String.t()
}