@Override
  public FlyweightCapableTreeStructure<LighterASTNode> parseContentsLight(ASTNode chameleon) {
    PsiBuilder builder = JavaParserUtil.createBuilder(chameleon);
    doParse(builder);
    return builder.getLightTree();
  }
@Override
  public FlyweightCapableTreeStructure<LighterASTNode> parseContentsLight(ASTNode chameleon)