void operator()(
     const InnerDecklistNode *node,
     const DecklistCardNode *card
 ) const {
     if (!cardDatabase.getCard(card->getName())->getIsToken()) {
         DecklistCardNode *addedCard = destination.addCard(
             card->getName(),
             node->getName()
         );
         addedCard->setNumber(card->getNumber());
     }
 }