static async System.Threading.Tasks.Task Main(string[] args)
        {
            GraphClient g  = new GraphClient("users");
            var         id = await g.AddGroup(new GroupVertex()
            {
                Name = "Robert Group"
            }, "robert1");

            var id2 = await g.AddGroupPost(new GroupUpdateVertex()
            {
                Body = "Robert Group Id", GroupId = id
            }, "robert1");

            var id3 = await g.AddGroupUpdateComment(new GroupUpdateCommentVertex { Body = "Robert Group Robert Group ID Comment" }, id2, "robert1");

            var t = g.HydrateGroupModel(id);

            Console.ReadLine();
        }