code: public void topicSpaceDeletedEvent(DestinationHandler destination)
      throws SIResourceException
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "topicSpaceDeletedEvent", destination);
  
      try
      {
        _lockManager.lockExclusive();
      
        _neighbours.topicSpaceDeleted(destination);
      }
      finally
      {
        _lockManager.unlockExclusive();
      }
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "topicSpaceDeletedEvent");
    }
docs: When a topic space is deleted, there may be proxy subscriptions
  that need removing from the match space and putting into "limbo"
  until the delete proxy subscriptions request is made
  
  @param destination  The destination topic space that has been deleted
  
  @exception SIResourceException