Get Full Id String Spigot

    /**
     * Gets the full ID of an ItemStack. ID:DATA
     *
     * @param itemStack The {@see org.bukkit.inventory.ItemStack}.
     * @return the full ID of an {@see org.bukkit.inventory.ItemStack}.
     */
    public String getFullId(ItemStack itemStack) {
        // Define a new String builder to append the ID and the data.
        StringBuilder stringBuilder = new StringBuilder();

        // Append the ID.
        stringBuilder.append(itemStack.getTypeId());

        // If the item has a data, we add it.
        if (itemStack.getData() != null && itemStack.getData().getData() != 0)
            stringBuilder.append(":" + itemStack.getData().getData());

        // Return the StringBuilder as a String.
        return stringBuilder.toString();
    }