Easy to deserialize JSON with anonymous object

JsonExtensions.cs

using System;

var json = """
{
    "IntVal": 3,
    "Inner":
    {
        "FloatVal": 9.8,
        "Message": "Test"
    },
    "Items":
    [
        {
            "Name": "A",
            "Time": "2023-11-09T23:59:59"
        },
        {
            "Name": "b",
            "Time": "2023-11-29T11:59:59"
        }
    ]
}
""";
var obj = json.DeserializeJson(() => new
{
    IntVal = default(int),
    Inner = new
    {
        FloatVal = default(float),
        Message = default(string)
    },
    Items = new[]
    {
        new
        {
            Name = default(string),
            Time = default(DateTime)
        }
    },
});
Console.WriteLine(obj!.Items[0].Time);
Console.ReadKey();

public static class JsonExtensions
{
    public static T? DeserializeJson<T>(this string json, Func<T> _, System.Text.Json.JsonSerializerOptions? options = null)
        => System.Text.Json.JsonSerializer.Deserialize<T>(json, options);
}