void ConcreteSyncApiUsage(JsonServiceClient client)
        {
            UsageNone   none    = client.Send <UsageNone>(new UsageNone());
            UsageReturn @return = client.Send(new UsageReturn());

            client.Send(new UsageVoid());
            List <UsageReturn> @returnAll = client.SendAll(new[] { new UsageReturn() });

            client.Publish(new UsageNone());
            client.Publish(new UsageReturn());
            client.Publish(new UsageVoid());
            client.PublishAll(new[] { new UsageNone() });
            client.PublishAll(new [] { new UsageReturn() });
            client.PublishAll(new [] { new UsageVoid() });
        }