protected String doComplete(Symbol clasz) throws IOException { ClassfileParser.parse(global, file, clasz);
protected String doComplete(Symbol root) throws IOException { assert root.isClassType(): Debug.show(root); ClassfileParser.parse(global, file, root);
    protected String doComplete(Symbol clasz) throws IOException {        ClassfileParser.parse(global, file, clasz);        return "class file '" + file + "'";    }