public void visitNewClass(JCNewClass tree) {
        scanExpr(tree.encl);
        scanExprs(tree.args);
       // scan(tree.def);
        for (List<Type> l = tree.constructor.type.getThrownTypes();
             l.nonEmpty();
             l = l.tail)
            markThrown(tree, l.head);
        scan(tree.def);
    }