static void Data(IBus bus)
    {
        Guid requestId = Guid.NewGuid();

        LargeMessage largeMessage = new LargeMessage
        {
            RequestId = requestId,
            LargeDataBus = new byte[1024*1024*5]
        };
        bus.Send("Samples.Unobtrusive.Server", largeMessage);

        Console.WriteLine("Request sent id: " + requestId);
    }
    static async Task Data(IEndpointInstance endpointInstance)
    {
        var requestId = Guid.NewGuid();

        var largeMessage = new LargeMessage
        {
            RequestId = requestId,
            LargeDataBus = new byte[1024*1024*5]
        };
        await endpointInstance.Send(largeMessage)
            .ConfigureAwait(false);

        Console.WriteLine("Request sent id: " + requestId);
    }