static <A> SimpleLiveValue<A> varWithNotifyToLiveValue(Class<A> type, IVarWithNotify<A> var) {

  if (var == null) null;

  var lv = new SimpleLiveValue<A>(type);

  var lvRef = weakRef(lv);

  var.onChange(r {

    var lv = lvRef!;

    print ifdef varWithNotifyToLiveValue_debug("varWithNotifyToLiveValue var.onChange " + lv);

    if (lv == null)

      var.removeChangeListener(this);

    else {

      var value = var!;

      print ifdef varWithNotifyToLiveValue_debug("varWithNotifyToLiveValue value " + value);

      lv.set(value);

    }

  });

  lv.onChange(-> var.set(lv!));

  lv.set(var!);

  ret lv;

}