Multiple Items in GUI from config.yml

Hey! I'm stuck and idk what to do, What Im trying to do is make it so you can add items to a GUI from inside a config

My code:

Code:

  public static void openGUI(Player player) {
        Inventory inv = Bukkit.createInventory(null, plugin.getConfig().getInt("FreezeGUI.InventorySlots"), ChatColor.translateAlternateColorCodes('&', plugin.getConfig().getString("FreezeGUI.InventoryName")));
      
            ItemStack a2 = new ItemStack(Material.getMaterial(plugin.getConfig().getString("FreezeGUI.InventoryItems.Item1")));
            ItemMeta am2 = a2.getItemMeta();
            am2.setDisplayName(ChatColor.translateAlternateColorCodes('&', plugin.getConfig().getString("FreezeGUI.InventoryItems.Item1Name")));
            List<String> lore = plugin.getConfig().getStringList("FreezeGUI.InventoryItems.Item1Lore");
            List<String> coloredLore = new ArrayList<String>();
            for (String s : lore) {
                coloredLore.add(ChatColor.translateAlternateColorCodes('&', s));
            }
            am2.setLore(coloredLore);
            a2.setItemMeta(am2);
            inv.setItem(plugin.getConfig().getInt("FreezeGUI.InventoryItems.Item1Slot"), a2);
          
        player.openInventory(inv);
    }

What I want my config to be:

Code:

FreezeGUI:
  InventoryItems:
    Item1:
      ItemName: '&cI''m editable'
      ItemSlot: 4
      Item: NETHER_STAR
      ItemLore:
         - ' '
         - '&7I''m also editable!'
         - '&6Really?! Same here!!'
         - '&bGazpachoYT &3is very cool! lol jkin'
         - '&3Thank you for using this plugin!'
         - '&3make sure you rate this &a5 STARS'
         - '&3because better updates soon!'

and then i want it to go like

Code:

    Item2:
      ItemName: '&cI''m editable'
      ItemSlot: 4
      Item: NETHER_STAR
      ItemLore:
         - ' '
         - '&7I''m also editable!'
         - '&6Really?! Same here!!'
         - '&bGazpachoYT &3is very cool! lol jkin'
         - '&3Thank you for using this plugin!'
         - '&3make sure you rate this &a5 STARS'
         - '&3because better updates soon!'

and so on....

help?

 

@timtower @GazpachoYT
You mean ConfigurationSection#getKeys(false)

 

Can you put it in my code so i can get an example? @timtower @Zombie_Striker