C# List<T>运用

很纠结的一段代码

/// <summary>
///反正写了也没人看
/// </summary>
public class ListDemo<T>
{
    public static List<T> Getstring<T2>(T2 tlist) where T2 : T
    {
        List<T> list = new List<T>();
        list.Add(tlist);
        return list;
    }
}