code: func (f *featureGate) String() string {
  	pairs := []string{}
  	for k, v := range f.enabled.Load().(map[Feature]bool) {
  		pairs = append(pairs, fmt.Sprintf("%s=%t", k, v))
  	}
  	sort.Strings(pairs)
  	return strings.Join(pairs, ",")
  }
docs: // String returns a string containing all enabled feature gates, formatted as "key1=value1,key2=value2,...".