code: public static Collection<Constituent> parsevalObjectify(Tree t, TreeTransformer collinizer) {
      return parsevalObjectify(t,collinizer,true);
    }
docs: Takes a Tree and a collinizer and returns a Collection of labeled
  {@link Constituent}s for PARSEVAL.
  @param t The tree to extract constituents from
  @param collinizer The TreeTransformer used to normalize the tree for
  evaluation
  @return The bag of Constituents for PARSEVAL.