rust - oxide items json

InfoJSON.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;

using Newtonsoft.Json;
using UnityEngine;

// items.json plugin for oxide (return JSON array with rust items (id, name, shortname, craftingStackable) 
namespace Oxide.Plugins
{
    [Info("Items JSON Dump", "decay.dev", "0.0.1")]
    [Description("Get JSON dump of all rust items, based on ItemsInfo by misticos")]
    class ItemsJSON : RustPlugin
    {
        protected override void LoadDefaultMessages()
        {
            lang.RegisterMessages(new Dictionary<string, string>
            {
                { "Incorrect Arguments", "Please, specify correct arguments." }
            }, this);
        }
        
        private void Init()
        {
            cmd.AddConsoleCommand("items.json", this, CommandConsoleHandle);
        }
        
        private bool CommandConsoleHandle(ConsoleSystem.Arg arg)
        {
            if (!arg.IsAdmin)
                return false; 
            arg.ReplyWith(GetItemsJSON());
            return true;
        }
        
        private string GetItemsJSON()
        {
            List<Hashtable> itemsList = new List<Hashtable>();
            var catalog = ItemManager.itemList;

            for (var i = 0; i < catalog.Count; i++)
            { 
                var item = catalog[i];

                Hashtable Item = new Hashtable();
                Item["id"] = item.itemid;
                Item["name"] = item.name;
                Item["shortname"] = item.shortname;
                Item["craftingStackable"] = item.craftingStackable;

                itemsList.Add(Item);
            }            
            string json = JsonConvert.SerializeObject(itemsList, Formatting.Indented);
            return json;
        }
        
        private string GetMsg(string key, string userId = null) => lang.GetMessage(key, this, userId);
    }
}