// Newtonsoft.Json serializer
public static T PassThroughNewtonsoftJsonSerializer <T>(this T value, ITestOutputHelper?output = null)
{
var s = new NewtonsoftJsonSerializer(NewtonsoftJsonSettings).ToTyped <T>();
var json = s.Write(value);
output?.WriteLine($"NewtonsoftJsonSerializer: {json}");
return(s.Read(json));
}