/**
   * Get a target subdirectory under current/ for a given block file that is being
   * restored from trash.
   *
   * The subdirectory structure under trash/ mirrors that under current/ to keep
   * implicit memory of where the files are to be restored.
   *
   * @return the target directory to restore a previously deleted block file.
   */
/**
   * Get a target subdirectory under current/ for a given block file that is being
   * restored from trash.
   *
   * The subdirectory structure under trash/ mirrors that under current/ to keep
   * implicit memory of where the files are to be restored.
   *
   * @return the target directory to restore a previously deleted block file.
   */ | BlockPoolSliceStorage.java