* try block if there are no resources to manage.
     */
    JCTree makeTwrTry(JCTry tree) {
        make_at(tree.pos());
        twrVars = twrVars.dup();
        JCBlock twrBlock = makeTwrBlock(tree.resources, tree.body, 0);
        if (tree.catchers.isEmpty() && tree.finalizer == null)
            result = translate(twrBlock);
        else
            result = translate(make.Try(twrBlock, tree.catchers, tree.finalizer));
        twrVars = twrVars.leave();
        return result;
    }