@type t() :: %Inttegro.Orders.FeeDetailsInput{
  amount: Inttegro.Money.AmountParams.t(),
  custom_data: %{optional(String.t()) => term()} | nil,
  description: String.t() | nil,
  id: String.t() | nil,
  label: String.t() | nil,
  tax_code: String.t() | nil
}