Newtonsoft.Json.JsonExtensionDataAttribute
Instructs the JsonSerializer to deserialize properties with no matching class member into the specified collection
and write values during serialization.
namespace Newtonsoft.Json
{
public class JsonExtensionDataAttribute : Attribute
{
public bool WriteData { get; set; }
public bool ReadData { get; set; }
public JsonExtensionDataAttribute();
}
}