t() :: %DocuSign.Model.BillingCharge{
  allowedQuantity: String.t(),
  blocked: String.t(),
  chargeName: String.t(),
  chargeType: String.t(),
  chargeUnitOfMeasure: String.t(),
  discounts: [BillingDiscount],
  firstEffectiveDate: String.t(),
  includedQuantity: String.t(),
  incrementalQuantity: String.t(),
  lastEffectiveDate: String.t(),
  prices: [BillingPrice],
  unitPrice: String.t(),
  usedQuantity: String.t()
}