Best way to obtain the RAML specification from a running server


We all know that the convention for retrieving the WSDL contract of a web service is to hit the target URL with a ?WSDL suffix. A similar convention would be helpful for RAML. Ideally, IMO, it would involve purely a URL scheme, but what should it be. It would be great to get some ideas and brainstorm on this question.

Generate RAML for existing API

Yes, this is being discussed at another thread.