code: func uuidFromPath(path string) (string, bool) {
  	components := strings.Split(path, "/")
  	for i := len(components) - 1; i >= 0; i-- {
  		if u, err := uuid.Parse(components[i]); err == nil {
  			return u.String(), i == len(components)-1
  		}
  	}
  	return "", false
  }
docs: // uuidFromPath extracts the upload UUID from a given path
  // If the UUID is the last path component, this is the containing
  // directory for all upload files