[OAUTH-WG] Question on the definition of an authorization endpoint response_type extension

[Todd W Lainhart <[e-mail]>]

I've defined a new response_type for the authorization endpoint for 
dealing with sessions - call it "urn:example:session_code".  Am I required 
to also include that value in the response as the code identifier, as in 
(unencoded):

 
https://client.example.com/cb?urn:example:session_code=SplxlOBeZQQYbYS6WxSbIA

               &state=xyz

I can see arguments either way (returning "code" or 
"urn:example:session_code" as a response parameter) but I'm not finding 
guidance in 6749.

Also, I'm unsure if questions like this are appropriate for this mailing 
list's charter, or are best directed to stackoverflow.

thanks -- Todd