public static boolean isLich (Entity entity) {
        if (entity instanceof Skeleton) {
            Skeleton lich = (Skeleton) entity;
            LeatherArmorMeta chestMeta;
            ItemStack lichChest = new ItemStack(Material.LEATHER_CHESTPLATE, 1, (short) - 98789);
            chestMeta = (LeatherArmorMeta) lichChest.getItemMeta();
            chestMeta.setColor(Color.fromRGB(52, 52, 52));
            lichChest.setItemMeta(chestMeta);
            if (lich.getEquipment().getChestplate().equals(lichChest)) {
                return true;
            }
        }
        return false;
    }