protected abstract void PlayErrorHandler(Gacha gacha, GachaTrigger trigger, NPNFError error);
protected abstract void PlayDoneHandler(Gacha gacha, GachaTrigger trigger, List <Entitlement> results);
protected abstract void PlayErrorHandler(Gacha gacha, GachaTrigger trigger, NPNFError error);
protected abstract void PlayDoneHandler(Gacha gacha, GachaTrigger trigger, List <Entitlement> results);