code: func ParseLogDetails(details string) (map[string]string, error) {
  	pairs := strings.Split(details, ",")
  	detailsMap := make(map[string]string, len(pairs))
  	for _, pair := range pairs {
  		p := strings.SplitN(pair, "=", 2)
  		// if there is no equals sign, we will only get 1 part back
  		if len(p) != 2 {
  			return nil, errors.New("invalid details format")
  		}
  		k, err := url.QueryUnescape(p[0])
  		if err != nil {
  			return nil, err
  		}
  		v, err := url.QueryUnescape(p[1])
  		if err != nil {
  			return nil, err
  		}
  		detailsMap[k] = v
  	}
  	return detailsMap, nil
  }
docs: // ParseLogDetails parses a string of key value pairs in the form
  // "k=v,l=w", where the keys and values are url query escaped, and each pair
  // is separated by a comma. Returns a map of the key value pairs on success,
  // and an error if the details string is not in a valid format.
  //
  // The details string encoding is implemented in
  // github.com/moby/moby/api/server/httputils/write_log_stream.go