public byte[] Serialize(object graph)
        {
            if (graph == null) graph = new NullValueType();

            return StreamHelper.Serialize(graph,
                (s, g) => GetFormatter().Serialize(s, g));
        }
        public byte[] Serialize(object graph)
        {
            if (graph == null)
            {
                graph = new NullValueType();
            }

            return(StreamHelper.Serialize(graph,
                                          (s, g) => GetFormatter().Serialize(s, g)));
        }