#unittest {
    name: "Ivar and nested classes.";
    result: 666;
};

class _Window1 {
    
    var Button1;
    var Button2;
    
    class _Button1 {
    };
    
    class _Button2 {
    };
    
    public var var1;
    func DidShow() {
        return var1;
    }
    
    func _init_container() {
        Button1 = "Button1";
        Button2 = "Button2";
        var1 = 666;
    }
    
    func _free_container() {
        Button1 = null;
        Button2 = null;
    }
};

func main() {
    var Window1 = _Window1();
    Window1._init_container();
    return Window1.DidShow();
}