List Shuffle in C# Unity 3D

List Shuffle in C#

public static void Shuffle<T>(this IList<T> ts)
{
    var count = ts.Count;
    var last = count - 1;
    for (var i = 0; i < last; ++i)
    {
        var r = UnityEngine.Random.Range(i, count);
        var tmp = ts[i];
        ts[i] = ts[r];
        ts[r] = tmp;
    }
}