public void envelope_has_accepts_for_known_response_readers()
        {
            var envelope = Publisher.As <MessageContext>().EnvelopeForRequestResponse <Message1>(new Message2());

            envelope.AcceptedContentTypes.ShouldContain("text/message1");
            envelope.AcceptedContentTypes.ShouldContain("text/oddball");

            envelope.AcceptedContentTypes.Last().ShouldBe("application/json");
        }