public class WindowEnchantItemHandler extends MessageHandler<WindowEnchantItemMessage> {
@Override
public void handleServer(ServerSession session, WindowEnchantItemMessage message) {
Player player = session.getPlayer();
EnchantmentTableWindow window = (EnchantmentTableWindow) player.get(WindowHolder.class).getActiveWindow();
EnchantmentTableInventory inv = (EnchantmentTableInventory) window.getInventoryConverters().get(2).getInventory();
int enchantSlot = message.getEnchantment();
int enchantLevel = window.getEnchantmentLevel(enchantSlot);
Human human = player.get(Human.class);
Level level = player.get(Level.class);
if (human == null || level == null) {