@type t() :: %LINE.Bot.MessagingApi.Model.CouponResponse{
  acquisitionCondition: LINE.Bot.Model.AcquisitionConditionResponse.t() | nil,
  barcodeImageUrl: Uri | nil,
  couponCode: String.t() | nil,
  couponId: String.t() | nil,
  createdTimestamp: integer() | nil,
  description: String.t() | nil,
  endTimestamp: integer() | nil,
  imageUrl: Uri | nil,
  maxAcquireCount: integer() | nil,
  maxTicketPerUser: integer() | nil,
  maxUseCountPerTicket: integer() | nil,
  reward: LINE.Bot.Model.CouponRewardResponse.t() | nil,
  startTimestamp: integer() | nil,
  status: String.t() | nil,
  timezone: String.t() | nil,
  title: String.t() | nil,
  usageCondition: String.t() | nil,
  visibility: String.t() | nil
}