GetOrElse extension method for c#

GetOrElseExtension.cs

using System;

namespace GetOrElse
{
	public static class GetOrElseExtension
	{
		public static T GetOrElse<T>(this Nullable<T> instance, T orElse) where T: struct
		{
			if (instance == null)
				return orElse;
			
			return instance.Value;
		}
	}
}

MainClass.cs

using System;

namespace GetOrElse
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			Nullable<int> i = null;
			Console.WriteLine(i.GetOrElse<int>(5));
			
			int? j = 42;
			Console.WriteLine(j.GetOrElse<int>(12));
		}
	}
}

Same as GetValueOrDefault() I guess.