public static UnsignedTx OracleExtend(this FlatClient client, OracleExtendTx tx) => client.CreateDebugOracleExtendAsync(tx).RunAndUnwrap();
public Task <UnsignedTx> OracleExtendAsync(OracleExtendTx tx, CancellationToken token = default(CancellationToken)) => _apiClient.PostOracleExtendAsync(tx, token);
