@type t() :: %Stripe.Params.Billing.CreditGrantCreateParams{
  amount: Stripe.Params.Billing.CreditGrantCreateParams.Amount.t(),
  applicability_config:
    Stripe.Params.Billing.CreditGrantCreateParams.ApplicabilityConfig.t(),
  category: String.t() | nil,
  customer: String.t() | nil,
  customer_account: String.t() | nil,
  effective_at: integer() | nil,
  expand: [String.t()] | nil,
  expires_at: integer() | nil,
  metadata: %{required(String.t()) => String.t()} | nil,
  name: String.t() | nil,
  priority: integer() | nil
}