MenuBarInfo bar = getJavaInfoByName("bar");
WidgetInfo button = frame.getChildrenWidgets().get(1);
// validate
IMenuPolicy policy = MenuObjectInfoUtils.getMenuInfo(bar).getPolicy();
// Object can not be pasted (not list of memento at all)
assertFalse(policy.validatePaste(new Object()));
// RootPanel can not be pasted (even it memento)
{
JavaInfoMemento memento = JavaInfoMemento.createMemento(button);
List<JavaInfoMemento> mementos = ImmutableList.of(memento);
assertFalse(policy.validatePaste(mementos));