channel = new DurableSubscription("testDurableSubscription", null, null, ms, pm);
channel = new DurableSubscription("clientid123", "testDurableSubscription", null, null, ms, pm);
   public void setUp() throws Exception   {      super.setUp();      pm = new HSQLDBPersistenceManager();      ms = new PersistentMessageStore("persistent-message-store", pm);      tr.setPersistenceManager(pm);      channel = new DurableSubscription("testDurableSubscription", null, null, ms, pm);      log.debug("setup done");   }