code: func (t *Topic) parseConfig(data []byte) (map[string]string, error) {
  	var cfg topicConfig
  	if err := json.Unmarshal(data, &cfg); err != nil {
  		return nil, err
  	}
  	return cfg.ConfigMap, nil
  }
docs: // parseConfig parses the json representation of a topic config
  // and returns the configuration values