code: public void notifyConnectionDirty(String url) {
  		JMXMonConnection connection = (JMXMonConnection)pool.get(url);
  		
  		if (connection != null){
  			connection.setNewActiveConnection(null, null);
  		}
  	}
docs: Allow external class to notify the pool that the connection identified by the provided
  jmx url is closed/in error
  @param url the jmx url