C# でPop処理を拡張メソッドにする

using System;
using System.Collections.Generic;

public static class ListExtensions
{
    public static T Pop<T>(this List<T> list)
    {
        if (list == null || list.Count == 0)
        {
            throw new InvalidOperationException("The list is empty.");
        }

        T value = list[0];
        list.RemoveAt(0);
        return value;
    }
}