@Test
    public void testRead() {
        EntityManager em = Persistence.createEntityManagerFactory("TisDatabase").createEntityManager();
        JpaEntityManager jem = em.unwrap(JpaEntityManager.class);
        //add logic for history tables
        Collection<ClassDescriptor> descs =
                jem.getServerSession().getProject().getDescriptors().values();
        for (ClassDescriptor descriptor : descs) {
            String primaryTable = descriptor.getTableName();
            HistoryPolicy policy = new HistoryPolicy();
            policy.addStartFieldName(primaryTable + ".row_start");
            policy.addEndFieldName(primaryTable + ".row_end");
            policy.addHistoryTableName(primaryTable, primaryTable + "_hist");
            descriptor.setHistoryPolicy(policy);
        }

        Session session = jem.getSession();
        ReadAllQuery historicalQuery = new ReadAllQuery(BankEntity.class);
        AsOfClause asOfClause = new AsOfClause(new Timestamp(0));
        historicalQuery.setAsOfClause(asOfClause);
        historicalQuery.dontMaintainCache();
        List pastBanks = (List) session.executeQuery(historicalQuery);
    }