docs: @Override
      public void unsubscribe(String subName) throws JMSRuntimeException, InvalidDestinationRuntimeException {
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "unsubscribe", new Object[] { subName });
          try {
              jmsSession.unsubscribe(subName);
          } catch (InvalidDestinationException ide) {
              throw (InvalidDestinationRuntimeException) JmsErrorUtils.getJMS2Exception(ide, InvalidDestinationRuntimeException.class);
          } catch (JMSException jmse) {
              throw (JMSRuntimeException) JmsErrorUtils.getJMS2Exception(jmse, JMSRuntimeException.class);
          } finally {
              if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
                  SibTr.exit(this, tc, "unsubscribe");
          }
      }