conn.setClientID("sofiavergara");
   public void testNonDurableSubscriberInvalidUnsubscribe() throws Exception   {      TopicConnectionFactory cf = (TopicConnectionFactory)ic.lookup("ConnectionFactory");      TopicConnection conn = cf.createTopicConnection();      TopicSession ts = conn.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);      try      {         ts.unsubscribe("invalid-subscription-name");         fail("this should fail");      }      catch(javax.jms.InvalidDestinationException e)      {         // OK      }   }