@type t() ::
  %Stripe.Params.SetupIntentUpdateParams.PaymentMethodOptions.Card.MandateOptions{
    amount: integer() | nil,
    amount_type: String.t() | nil,
    currency: String.t() | nil,
    description: String.t() | nil,
    end_date: integer() | nil,
    interval: String.t() | nil,
    interval_count: integer() | nil,
    reference: String.t() | nil,
    start_date: integer() | nil,
    supported_types: [String.t()] | nil
  }