code: func (cs *clientServer) Close() error {
  	if cs.publishTicker != nil {
  		cs.publishTicker.Stop()
  	}
  	if cs.publishHealthTicker != nil {
  		cs.publishHealthTicker.Stop()
  	}
  
  	cs.cancel()
  	return cs.Disconnect()
  }
docs: // Close closes the underlying connection.