Generic Coveriant, C#

Generic Coveriant

//Title of this code
//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
	public interface IMyCoVarGenIF<out T>
	{

T GetObject();

}
	
	class MyClass<T> : IMyCoVarGenIF<T>
	{

T obj;

public MyClass(T v) 
		{ 
			obj = v; 
		}

public T GetObject()
		{ 
			return obj; 
		}

}
	
	class Alpha 
	{

string name;
		public Alpha(string n) 
        { 
            name = n; 
        }

public string GetName()
        { 
            return name;
        }

// ...

}

class Beta : Alpha 
	{

public Beta(string n) : base(n) { }

// ...

}
	
	public class Program
	{
		public static void Main(string[] args)
		{
			IMyCoVarGenIF<Alpha> AlphaRef =

new MyClass<Alpha>(new Alpha("Alpha #1"));

Console.WriteLine(AlphaRef.GetObject().GetName());

AlphaRef = new MyClass<Beta>(new Beta("Beta #1"));

Console.WriteLine(AlphaRef.GetObject().GetName());
            
            
            IMyCoVarGenIF<Alpha> AlphaRef2 =new MyClass<Beta>(new Beta("Alpha #1"));
            Console.WriteLine(AlphaRef2.GetObject().GetName());
		}
	}
}


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