List supers = supersFor(hexCopy, comp);
List<Image> supers = supersFor(hexCopy, comp);
    public synchronized Object[] assignMatch(IHex hex, Component comp) {        IHex hexCopy = hex.duplicate();        List supers = supersFor(hexCopy, comp);        Image base = baseFor(hexCopy, comp);        Object[] pair = new Object[] {base, supers};        hexToImageCache.put(hex, base);        hexToImageListCache.put(hex,supers);        return pair;    }