code: public TreeReader newTreeReader(Reader in) {
      if (discardFrags) {
        return new FragDiscardingPennTreeReader(in, new LabeledScoredTreeFactory(), tn, new CHTBTokenizer(in));
      } else {
        return new PennTreeReader(in, new LabeledScoredTreeFactory(), tn, new CHTBTokenizer(in));
      }
    }
docs: Create a new <code>TreeReader</code> using the provided
  <code>Reader</code>.
  
  @param in The <code>Reader</code> to build on
  @return The new TreeReader