如何防止C#在我的测试控制器中包装我的JSON输出？

services.AddMvc().AddJsonOptions(options =>
{
    options.JsonSerializerOptions.IgnoreNullValues = true; // 忽略空值
    options.JsonSerializerOptions.WriteIndented = true; // 格式化输出
    options.JsonSerializerOptions.PropertyNamingPolicy = null; // 保持属性名不变
});

public class NoWrapJsonResult : ActionResult
{
    private readonly object _value;

    public NoWrapJsonResult(object value)
    {
        _value = value;
    }

    public override async Task ExecuteResultAsync(ActionContext context)
    {
        var response = context.HttpContext.Response;
        response.ContentType = "application/json";

        var json = JsonSerializer.Serialize(_value, new JsonSerializerOptions
        {
            IgnoreNullValues = true,
            WriteIndented = true,
            PropertyNamingPolicy = null
        });

        await response.WriteAsync(json);
    }
}

public IActionResult GetJsonData()
{
    var data = new { Name = "John", Age = 30 };
    return new NoWrapJsonResult(data);
}