If you do not provide an _OPTIONS subroutine, we will automatically respond
with a 200 OK. The "Allow" header will be populated with the list of
-implemented request methods.
+implemented request methods. If you do not provide an _HEAD either, we will
+auto dispatch to the _GET one in case it exists.
It is likely that you really want to look at L<Catalyst::Controller::REST>,
which brings this class together with automatic Serialization of requests