presto-iceberg/src/main/java/io/prestosql/plugin/iceberg/IcebergTransactionManager.java/IcebergTransactionManager/remove
class IcebergTransactionManager:    public IcebergMetadata remove(ConnectorTransactionHandle transaction)
    {
        IcebergMetadata metadata = transactions.remove(transaction);
        checkArgument(metadata != null, "no such transaction: %s", transaction);
        return metadata;
    }