### Question:
VavrDeckOfCardsAsSortedSet { public Map<Rank, Long> countsByRank() { return null; } VavrDeckOfCardsAsSortedSet(); List<Card> shuffle(Random random); Tuple2<Set<Card>, ? extends List<Card>> deal(List<Card> stack, int count); List<Set<Card>> shuffleAndDeal(Random random, int hands, int cardsPerHand); List<Set<Card>> dealHands(
            List<Card> shuffled,
            int hands,
            int cardsPerHand); SortedSet<Card> diamonds(); SortedSet<Card> hearts(); SortedSet<Card> spades(); SortedSet<Card> clubs(); Map<Suit, Long> countsBySuit(); Map<Rank, Long> countsByRank(); SortedSet<Card> getCards(); Map<Suit, ? extends SortedSet<Card>> getCardsBySuit();  }### Answer:
@Test public void countsByRank() { Assert.assertEquals( this.jdkDeck.countsByRank().get(Rank.TEN), this.vavrDeck.countsByRank().get(Rank.TEN).get()); }