code: public DirectoryEntry lookUp(
        File workingDirectory, JimfsPath path, Set<? super LinkOption> options) throws IOException {
      checkNotNull(path);
      checkNotNull(options);
  
      DirectoryEntry result = lookUp(workingDirectory, path, options, 0);
      if (result == null) {
        // an intermediate file in the path did not exist or was not a directory
        throw new NoSuchFileException(path.toString());
      }
      return result;
    }
docs: Returns the result of the file lookup for the given path.