assertTrue(news.contains(news1.toReference()));
assertTrue(news.contains(news2.toReference()));
assertTrue(news.contains(news3.toReference()));
assertTrue(news.contains(copiedNews1.toReference()));
assertTrue(news.contains(copiedNews2.toReference()));
assertTrue(news.contains(copiedNews3.toReference()));
assertTrue(news.contains(otherNews1.toReference()));
}
{
List<NewsReference> news = mark.getNewsRefs(EnumSet.of(INews.State.NEW));