Building Theme mod

Mod.cs

using BuildingThemes;
using ICities;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ColossalFramework;

namespace UKTerracedBuildingTheme
{
    public class Theme : LoadingExtensionBase, IUserMod
    {
        private static readonly string themeName = "UK Terraced Housing";

        public static readonly string[] buildings = {
            "452688457.Terraced House 1_Data",
            "452693614.Terraced House 2_Data",
            "452694147.Terraced House 3_Data",
            "452698364.Terraced House 4_Data",
            "452699199.Terraced House 5_Data",
            "452811044.Terraced House 6_Data",
            "452932057.Terraced House 7_Data",
            "453553786.Terraced House 8_Data",
            "454103592.Terraced House - Corner 1_Data",
            "454569456.Terraced House - Corner 2_Data",
            "455711566.UK Corner Pub - The Vic_Data",
            "455845254.UK Corner Pub - The Tappers_Data",
            "456271993.UK Corner Pub - The Crown_Data",
            "456534883.Terraced Shop - Londis_Data",
            "456877661.Terraced Shop - Tesco Express_Data",
            "457089522.Terraced Shop - Sainsburys Local_Data",
            "457722555.Terraced Shop - Post Office_Data",
            "457806606.Terraced Shop - Subway_Data",
            "458227957.Terraced Shop - Coral_Data",
            "461456668.Terraced Shop - KFC_Data",
            "462018064.Terraced Shop - Greggs_Data",
            "462586718.Terraced Shop - Poundland_Data",
            "462731956.Terraced Shop - Bargain Booze_Data",
            "463995315.Terraced Shop - Premier Stores_Data",
            "464726117.Terraced Shop - Olivers Fish Bar_Data",
            "465122960.Terraced Shop - Lloyds Pharmacy_Data",
            "466230548.Terraced House - Modern 1_Data",
            "466915380.Terraced House - Modern 2_Data",
            "467647016.Terraced House - Modern 3_Data",
            "468470239.Terraced House - Modern 4_Data",
            "469118567.Terraced House - Modern 5_Data"};
        
        public string Name
        {
            get
            {
                return "Building Theme: " + themeName;
            }
        }

        public string Description
        {
            get { return "Create building themes and apply them to cities and districts."; }
        }

        private bool initialized = false;

        public override void OnLevelLoaded(LoadMode mode)
        {
            if (Singleton<BuildingThemesManager>.exists && !initialized) 
            {
                Configuration.Theme theme = new Configuration.Theme(themeName);
                theme.isBuiltIn = true;
                theme.addAll(buildings, true);

                initialized = true;

                Singleton<BuildingThemesManager>.instance.AddTheme(theme, Name);
            }
        }
    }
}