this.baseDir = baseDir.toPath().toAbsolutePath();
        this.startNameIndex = this.baseDir.getNameCount();
        this.endNameIndex = startNameIndex + depth;
    }

    @Override
    public void markAccessed(File file) {
        Path path = file.toPath().toAbsolutePath();
        if (path.getNameCount() >= endNameIndex && path.startsWith(baseDir)) {

      // "\foo" ("\" - current drive for process on Windows)
      // "C:foo" ("C:" - working dir of drive C on Windows)
      return parent;
    }

    // Paths that don't have a parent:
    if (path.getNameCount() == 0) {
      // "/", "C:\", "\" (no parent)
      // "" (undefined, though typically parent of working dir)
      // "C:" (parent of working dir of drive C on Windows)
      //