session.producers.remove(new Integer(this.id));
session.removeBrowserDelegate(id);
   public void close() throws JMSException   {      if (closed)      {         throw new IllegalStateException("Browser is already closed");      }      iterator = null;      session.producers.remove(new Integer(this.id));      JMSDispatcher.instance.unregisterTarget(new Integer(id));      closed = true;   }