code: func (u *FakeVolumeUtil) AddNewDirEntries(mountDir string, dirFiles map[string][]*FakeDirEntry) {
  	for dir, files := range dirFiles {
  		mountedPath := filepath.Join(mountDir, dir)
  		curFiles := u.directoryFiles[mountedPath]
  		if curFiles == nil {
  			curFiles = []*FakeDirEntry{}
  		}
  		glog.Infof("Adding to directory %q: files %v\n", dir, files)
  		u.directoryFiles[mountedPath] = append(curFiles, files...)
  	}
  }
docs: // AddNewDirEntries adds the given files to the current directory listing
  // This is only for testing