.net是否有允许ref返回值的集合类？

public class Program
{
    static void Main(string[] args)
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5 };
        Console.WriteLine("Before: " + string.Join(", ", numbers));

        ModifyList(ref numbers);

        Console.WriteLine("After: " + string.Join(", ", numbers));
    }

    static void ModifyList(ref List<int> list)
    {
        list.Add(6);
        list.Add(7);
        list.Add(8);
    }
}

Before: 1, 2, 3, 4, 5
After: 1, 2, 3, 4, 5, 6, 7, 8