code: func decodeProtocol(data []byte) []byte {
  	decoded, err := base64.StdEncoding.DecodeString(string(data))
  	if err != nil {
  		log.Fatalf("error base64 decoding data: %s %s\n", err, string(data))
  	}
  	return decoded
  }
docs: // because google's git viewer is broken, downloading ?format=json, we have to
  // base64 decode the text response.