} else if (shop instanceof SellShop) {
event = new ShowCasePlayerBuyEvent(player, (SellShop)shop, quantity);
} else if (shop instanceof ExchangeShop) {
event = new ShowCasePlayerExchangeEvent(player, (ExchangeShop)shop, quantity);
} else if (shop instanceof DisplayShop) {
event = new ShowCaseInfoEvent(player, shop);
}