Dominion.GameState.DoPlayOneTreasure C# (CSharp) Method

        internal Card DoPlayOneTreasure(PlayerState currentPlayer)
        {
            Card cardTypeToPlay = currentPlayer.actions.GetTreasureFromHandToPlay(this, acceptableCard => true, isOptional: true);
            if (cardTypeToPlay == null)
            {
                return null;
            }

            Card currentCard = currentPlayer.RemoveCardFromHand(cardTypeToPlay);
            if (currentCard == null)
            {
                throw new Exception("Player tried to remove a card that wasn't available in hand");
            }

            currentPlayer.DoPlayTreasure(currentCard, this);

            return cardTypeToPlay;
        }

 public override void DoSpecializedAction(PlayerState currentPlayer, GameState gameState)
 {
     for (int i = 0; i < 3; ++i)
        {
        Card cardPlayed = gameState.DoPlayOneTreasure(currentPlayer);
        if (cardPlayed == null)
            break;
        }
        currentPlayer.DrawAdditionalCardsIntoHand(currentPlayer.AvailableCoins, gameState);
        currentPlayer.turnCounters.RemoveCoins(currentPlayer.turnCounters.AvailableCoins);
 }