promotion-code

record promotion-code {
  active: bool,
  code: string,
  coupon: coupon,
  created: s32,
  customer: option​<string>,
  expires-at: option​<s32>,
  id: string,
  livemode: bool,
  max-redemptions: option​<s32>,
  metadata: option​<promotion-code-metadata>,
  object: promotion-code-object-enum,
  restrictions: resource-restrictions,
  times-redeemed: s32,
}