public void loadChest(Inventory inv){
        final File file = new File(ChestRefill.INSTANCE.getPlugin().getDataFolder(), "data.yml");
        final YamlConfiguration yaml = YamlConfiguration.loadConfiguration(file);

        int id = 0;

        if(yaml.getConfigurationSection("chests") != null) {
            for (String key : yaml.getConfigurationSection("chests").getKeys(false)) {
                id = Integer.parseInt(key);
            }
        }

        int counter = 1;
        ItemStack[] contents;
        for (int length = (contents = inv.getContents()).length, i = 0; i < length; ++i) {
            final ItemStack is = contents[i];
            if (is != null) {
                yaml.set("chests." + id + ".inv.slot" + counter, is);
                ++counter;
            }
        }
        --counter;

        try {
            yaml.save(file);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }