display/write generics in GOOPS

[mark]

Are `display' and `write' supposed to get overwritten with generic
functions when GOOPS is loaded? The manual says so, but when I try it in
2.0.9 and the latest build on master, it doesn't seem to happen:

scheme@(guile-user)> (use-modules (oop goops))
scheme@(guile-user)> display
$2 = #<procedure display (_ #:optional _)>
scheme@(guile-user)> 

(define-method (display ...) ...) doesn't give me any errors, but
doesn't seem to affect the result of actually calling display on
anything. Am I missing something?

Thanks

-- 
Mark Witmer