A T4Template to auto generate Unit of work factory over repository pattern (Entity framework)

UnitOfWorkFactory.tt

<#@ template debug="true" hostSpecific="true" #>
<#@ output extension=".cs" #>
<#@ Assembly Name="System.Core.dll" #>
<#@ Assembly Name="System.Xml.dll" #>
<#@ Assembly Name="System.Xml.Linq.dll" #>
<#@ Assembly Name="System.Windows.Forms.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.IO" #>
<#@ import namespace="System.Diagnostics" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Xml.Linq" #>
<#@ import namespace="System.Collections" #>
<#@ import namespace="System.Collections.Generic" #>
<# 
   /******************************************/
   // Add model entities in below array, template will automatically update the UnitOfWork template.
   var entities = new String[] { 
   "Course", 
   "Test" 
   };
  /******************************************/
#>
/*****************************
Generated by <#= Host.TemplateFile #>

Warning (AutoGenerated) - This file is autogenerated by UnitOfWork template file. DO NOT update code here to add a new entity.
Add new entity in the UnitOfWorkFactory.tt code. Follow instructions in the source.

******************************/
using System;
using System.Collections.Generic;
using Domain_Repository.Domain;
using Domain_Repository.Infrastructre;
using System.Data.Entity;
using Domain_Repository.Repository;
using Domain_Repository.Repository.EF;
namespace Domain_Repository.DataAccess
{
    public static class UnitOfWorkFactory
    {
        private static IUnitOfWork _instance = null;

        public static IUnitOfWork Create()
        {
            return _instance ?? new UnitOfWork();
        }

		private partial class UnitOfWork : DbContext, IUnitOfWork
        {
<# foreach(var entity in entities) {#>
           private DbSet<<#=entity #>> <#=entity #>s { get; set; }
<#}#>

<# foreach(var entity in entities) {#>
           private Repository<<#=entity #>> _<#=entity.Replace(entity[0].ToString(), entity[0].ToString().ToLower()) #>Repository;
<#}#>

            internal UnitOfWork()
            {
<# foreach(var entity in entities) {#>
                _<#=entity.Replace(entity[0].ToString(), entity[0].ToString().ToLower()) #>Repository = new Repository<<#=entity #>>(<#=entity #>s);
<#}#>
            }
<# foreach(var entity in entities) {#>
            public IRepository<<#=entity #>> <#=entity #>Repository
            {
                get { return _<#=entity.Replace(entity[0].ToString(), entity[0].ToString().ToLower()) #>Repository; }
            }

<#}#>
            public void Save()
            {
                SaveChanges();
            }
        }
    }
}