@type optional() :: String.t() | nil

@type t() :: %Stellar.Horizon.Operation.RevokeSponsorship{
  account_id: String.t(),
  claimable_balance_id: String.t(),
  data_account_id: String.t(),
  data_name: String.t(),
  offer_id: String.t(),
  signer_account_id: String.t(),
  signer_key: String.t(),
  trustline_account_id: String.t(),
  trustline_asset: String.t()
}