### Question:
VavrDeckOfCardsAsList { public List<Card> clubs() { return null; } VavrDeckOfCardsAsList(); 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); List<Card> diamonds(); List<Card> hearts(); List<Card> spades(); List<Card> clubs(); Map<Suit, Long> countsBySuit(); Map<Rank, Long> countsByRank(); List<Card> getCards(); Map<Suit, ? extends List<Card>> getCardsBySuit();  }### Answer:
@Test public void clubs() { Assert.assertEquals(this.jdkDeck.clubs(), this.vavrDeck.clubs().toJavaList()); }