Access session id in MethodHandler

[theduke]

I need to access the session ID within a MethodHandler.

As far as I can tell, there is no way to do that now.

I'm willing to put in work myself and then open a PR, but this will require an API change,
so I wanted to ask first how you think this should be implemented.

[mourad]

Taking a look at the SPEC, it seems that this should be implemented using CALL.Options.disclose_me|bool := true.

https://tools.ietf.org/html/draft-oberstet-hybi-tavendo-wamp-02#section-13.3.5