code: func ParseSyncBinKey(s string) (uint8, error) {
  	bin, err := strconv.ParseUint(s, syncBinKeyBase, 8)
  	if err != nil {
  		return 0, err
  	}
  	return uint8(bin), nil
  }
docs: // ParseSyncBinKey parses the string representation
  // and returns the Kademlia bin number.