@type t() :: %Inttegro.OTPTransaction{
  cancel_reason: String.t() | nil,
  canceled_at: String.t() | nil,
  expires_at: String.t(),
  full_message: String.t(),
  id: String.t(),
  initiated_at: String.t(),
  status: Inttegro.OTPStatus.t(),
  transmission: Inttegro.OTPTransmission.t() | nil
}