@type t() :: %MollieAPI.Model.EntitySettlementPeriodsValueValue{
  costs:
    [MollieAPI.Model.EntitySettlementPeriodsValueValueCostsInner.t()] | nil,
  invoiceId: String.t() | nil,
  invoiceReference: String.t() | nil,
  revenue:
    [MollieAPI.Model.EntitySettlementPeriodsValueValueRevenueInner.t()] | nil
}