private bool IsStraight(IHand hand)
        {
            var sortedHand = hand.SortCards();
            var expectedNextCardValue = sortedHand[0].GetCardValue() + 1;

            for (var x = 1; x < sortedHand.Count; x++)
            {
                var currentCard = sortedHand[x];
                if (currentCard.GetCardValue() != expectedNextCardValue)
                {
                    return false;
                }
                expectedNextCardValue++;
            }
            hand.SetRank(Rank.Straight);
            return true;
        }