@type t() :: %Merchant.AddressV4{
  city: String.t() | nil,
  country_code: String.t() | nil,
  country_subdivision_code: (String.t() | nil) | nil,
  postcode: String.t() | nil,
  region: (String.t() | nil) | nil,
  street_line_1: String.t() | nil,
  street_line_2: (String.t() | nil) | nil
}