code: func (s entryState) String() string {
  	switch s {
  	case incomplete:
  		return "incomplete"
  	case ready:
  		return "ready"
  	case failed:
  		return "failed"
  	case expired:
  		return "expired"
  	default:
  		return fmt.Sprintf("unknown(%d)", s)
  	}
  }
docs: // String implements Stringer.