Csharp 在.NET8中如何反序列化为私有字段

通过阅读有关.NET 8序列化的公告和文档，我的印象是我们可以序列化到私有字段中.

我试着做以下几件事:

public class User
{
    [JsonInclude]
    [JsonPropertyName("name")]
    private string _name = null!;
    
    public int Age { get; }
            
    [JsonConstructor]
    private User(string name, int age)
    {
        _name = name;
        Age = age;
    }
    
    private User(){}

}

...
var userStr = @"{""name"": ""juan"", ""age"": 31}";
var options = new JsonSerializerOptions
{
    PropertyNameCaseInsensitive = true,
    IncludeFields = true,
    IgnoreReadOnlyFields = false
};
var user = JsonSerializer.Deserialize<User>(userStr, options)!;

这就抛出了

Unhandled exception. System.InvalidOperationException: Each parameter in the deserialization constructor on type 'User' must bind to an object property or field on deserialization. Each parameter name must match with a property or field on the object. Fields are only considered when 'JsonSerializerOptions.IncludeFields' is enabled. The match can be case-insensitive.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ConstructorParameterIncompleteBinding(Type parentType)...

将私有字段更改为公开如下获取方法的属性 public string Name { get; }可以，但问题是我希望它是一个私有领域.在我的实际场景中，我有一个private List<T>，但我只公开了一个public IReadOnlyCollection<T>，它的getter将列表返回为只读.

有没有办法告诉序列化使用私有字段？