docs: @Override
      public String getTopicName() throws JMSException {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "getTopicName");
          String topicName = getDestDiscrim();
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "getTopicName", topicName);
          return topicName;
      }