Add_header with 40x

Does anyone know if there are plans to allow the add_header directive to
work with 40x errors?

Right now on one of our sites we are build an API and I have setup rules
in
the NGINX configuration to check the request_method and if it is not one
of
the allowed one’s then return a 405 HTTP response, the problem is by
HTTP
1.1 spec you are required to return an Allow header with the list of
allowed
methods when returning a 405. The obvious problem is add_header in
NGINX
currently only supports using add_header on 200, 204, 301, 302 or 304.

Thoughts anyone?

Thank you,
Josh