presto-main/src/main/java/io/prestosql/transaction/TransactionBuilder.java/TransactionBuilder/TransactionBuilder
class TransactionBuilder:    private TransactionBuilder(TransactionManager transactionManager, AccessControl accessControl)
    {
        this.transactionManager = requireNonNull(transactionManager, "transactionManager is null");
        this.accessControl = requireNonNull(accessControl, "accessControl is null");
    }