throw new JMSException("Cannot find durable subscription with name " +
throw new InvalidDestinationException("Cannot find durable subscription with name " +
   public void unsubscribe(String subscriptionName) throws JMSException   {      DurableSubscriptionHolder subscription = this.serverPeer.getClientManager().            removeDurableSubscription(this.clientID, subscriptionName);      if (subscription == null)      {         throw new JMSException("Cannot find durable subscription with name " +            subscriptionName + " to unsubscribe");      }      subscription.getTopic().remove(subscription.getQueue().getReceiverID());         }