无法反序列化xdocument

我正在尝试将XDocument反序列化为包含数组/列表的类。问题是这段代码做不到,我总是得到一个 Response 没有任何库存项的类(不为空,但计数为0)

以下是我的测试方法:

public void GetObj()
{
    var xe = new XElement("Inventory");
    var xe2 = new XElement("Id", "23");
    xe.Add(xe2);

    var list = new List<XElement>();
    list.Add(xe);
    list.Add(xe);

    var doc = new XDocument(new XElement("Response", list));

    var obj = doc.Deserialize<Response>();
}

下面是我的扩展方法和模型:

public static class XDocumentExtensions
{
    public static T Deserialize<T>(this XDocument doc)
    {
        XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));

        using (var reader = doc.Root.CreateReader())
        {
            return (T)xmlSerializer.Deserialize(reader);
        }
    }

    public static XDocument Serialize<T>(this T value)
    {
        XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));

        XDocument doc = new XDocument();
        using (var writer = doc.CreateWriter())
        {
            xmlSerializer.Serialize(writer, value);
        }

        return doc;
    }
}

public class Response
{
    public List<Inventory> Inventory { get; set; }
}

public class Inventory
{
    public int Id { get; set; }
}