@type t() :: %StripeElixir.Params.Billing.CreditGrantCreateParams{
  amount: map(),
  applicability_config: map(),
  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: map() | nil,
  name: String.t() | nil,
  priority: integer() | nil
}