@type t() :: %Stripe.Params.Tax.CalculationCreateParams{
  currency: String.t(),
  customer: String.t() | nil,
  customer_details:
    Stripe.Params.Tax.CalculationCreateParams.CustomerDetails.t() | nil,
  expand: [String.t()] | nil,
  line_items: [Stripe.Params.Tax.CalculationCreateParams.LineItems.t()],
  ship_from_details:
    Stripe.Params.Tax.CalculationCreateParams.ShipFromDetails.t() | nil,
  shipping_cost:
    Stripe.Params.Tax.CalculationCreateParams.ShippingCost.t() | nil,
  tax_date: integer() | nil
}