@type body() ::
  Stellar.Horizon.Operation.AccountMerge.t()
  | Stellar.Horizon.Operation.AllowTrust.t()
  | Stellar.Horizon.Operation.BeginSponsoringFutureReserves.t()
  | Stellar.Horizon.Operation.BumpSequence.t()
  | Stellar.Horizon.Operation.ChangeTrust.t()
  | Stellar.Horizon.Operation.CreateAccount.t()
  | Stellar.Horizon.Operation.CreateClaimableBalance.t()
  | Stellar.Horizon.Operation.ClaimClaimableBalance.t()
  | Stellar.Horizon.Operation.CreatePassiveSellOffer.t()
  | Stellar.Horizon.Operation.EndSponsoringFutureReserves.t()
  | Stellar.Horizon.Operation.LiquidityPoolDeposit.t()
  | Stellar.Horizon.Operation.LiquidityPoolWithdraw.t()
  | Stellar.Horizon.Operation.ManageBuyOffer.t()
  | Stellar.Horizon.Operation.ManageSellOffer.t()
  | Stellar.Horizon.Operation.ManageData.t()
  | Stellar.Horizon.Operation.PathPaymentStrictReceive.t()
  | Stellar.Horizon.Operation.PathPaymentStrictSend.t()
  | Stellar.Horizon.Operation.Payment.t()
  | Stellar.Horizon.Operation.RevokeSponsorship.t()
  | Stellar.Horizon.Operation.SetOptions.t()

@type t() :: %Stellar.Horizon.Operation{
  body: body(),
  created_at: DateTime.t(),
  id: String.t(),
  paging_token: String.t(),
  source_account: String.t(),
  transaction: Stellar.Horizon.Transaction.t() | nil,
  transaction_hash: String.t(),
  transaction_successful: boolean(),
  type: String.t(),
  type_i: non_neg_integer()
}