private DeckData buildDeckData(Deck deck) {
DeckData data = new DeckData();
data.setName(deck.name());
data.setIdentity(deck.getIdentity().key());
List<CardEntry> entries = deck.cards();
for (CardEntry cardEntry : entries) {
data.addCardRef(cardEntry.getKey(), cardEntry.getCount());
}
return data;
}
