code: function (playerCards, dealerCard, handValue, handCount, dealerCheckedBlackjack, options) 
      {
          // If exactComposition isn't set, no override
          if (options.strategyComplexity != "exactComposition")
          {
              return null;
          }
  
          // Now look at strategies based on game options
          if ((options.numberOfDecks == 2) && (!options.hitSoft17)) 
          {
              return TwoDeckStandSoft17(playerCards, dealerCard, handValue, handCount, dealerCheckedBlackjack, options);
          }
      }
docs: Special-case overrides based on exact composition of cards