@type t() :: %MollieAPI.Model.EntitySettlementBasePeriodsValueValue{
  costs:
    [MollieAPI.Model.EntitySettlementBasePeriodsValueValueCostsInner.t()] | nil,
  invoiceId: String.t() | nil,
  invoiceReference: String.t() | nil,
  revenue:
    [MollieAPI.Model.EntitySettlementBasePeriodsValueValueRevenueInner.t()]
    | nil
}