code: func (info *FileInfo) LookUp(path string) *FileInfo {
  	// As this runs on the daemon side, file paths are OS specific.
  	parent := info
  	if path == string(os.PathSeparator) {
  		return info
  	}
  
  	pathElements := strings.Split(path, string(os.PathSeparator))
  	for _, elem := range pathElements {
  		if elem != "" {
  			child := parent.children[elem]
  			if child == nil {
  				return nil
  			}
  			parent = child
  		}
  	}
  	return parent
  }
docs: // LookUp looks up the file information of a file.