docs: public static <NodeT extends ConstituentNode<NodeT, ?>> HeadFinder<NodeT> createChinesePTBFromResources()
        throws IOException {
      final boolean headInitial = true;
      final CharSource resource = Resources
          .asCharSource(EnglishAndChineseHeadRules.class.getResource("ch_heads.sun.txt"),
              Charsets.UTF_8);
      final ImmutableMap<Symbol, HeadRule<NodeT>> headRules =
              headRulesFromResources(headInitial, resource);
      return MapHeadFinder.create(headRules);
    }