if (log.isTraceEnabled()) log.trace("Attempting to remove receiver");
if (log.isTraceEnabled()) log.trace("Attempting to remove receiver from destination:" + destination);
   void setStarted(boolean s)   {           if (s)      {         if (log.isTraceEnabled()) log.trace("Attempting to add receiver");         boolean added = destination.add(this);         if (log.isTraceEnabled()) log.trace("Added receiver:" + this.id + ", success=" + added);      }      else      {         if (log.isTraceEnabled()) log.trace("Attempting to remove receiver");         Receiver removed = destination.remove(id);         if (log.isTraceEnabled()) log.trace("Removed receiver:" + removed);      }   }