Method getOrCreate

forge-core/src/main/java/forge/deck/Deck.java:223–230

(DeckSection deckSection)

    // will return new if it was absent
    public CardPool getOrCreate(DeckSection deckSection) {
        CardPool p = get(deckSection);
        if (p != null)
            return p;
        p = new CardPool();
        this.parts.put(deckSection, p);
        return p;
    }
    
    public void putSection(DeckSection section, CardPool pool) {
        this.parts.put(section, pool);