class LocalFileSystem extends FileSystem<LocalResourceId> {

  @Override
  protected List<MatchResult> match(List<String> specs) throws IOException {
    ImmutableList.Builder<MatchResult> ret = ImmutableList.builder();
    for (String spec : specs) {
      ret.add(matchOne(spec));
    }
    return ret.build();
  }

    LocalFileSystem();

}