[2.1] 400 BAD REQUEST: Unrecognised signature: method=GET op=is_registered

[Nobuto Murata]

MAAS API client has "machines is-registered" subcommand, but it does not work with "400 BAD REQUEST". "method=GET op=is_registered" is not in the API document either:
https://maas.ubuntu.com/docs2.1/api.html

$ maas "$PROFILE" machines is-registered mac_address='XX:XX:XX:XX:XX:XX' -d
400 BAD REQUEST

         Connection: close
       Content-Type: text/plain; charset=utf-8
               Date: Wed, 18 Jan 2017 14:07:37 GMT
             Server: TwistedWeb/16.0.0
             Status: 400
  Transfer-Encoding: chunked
               Vary: Cookie
    X-Frame-Options: SAMEORIGIN

Unrecognised signature: method=GET op=is_registered

$ apt policy maas
maas:
  Installed: 2.1.2+bzr5555-0ubuntu1~16.04.1
  Candidate: 2.1.2+bzr5555-0ubuntu1~16.04.1
  Version table:
 *** 2.1.2+bzr5555-0ubuntu1~16.04.1 500
        500 http://ppa.launchpad.net/maas/stable/ubuntu xenial/main amd64 Packages
        500 http://ppa.launchpad.net/maas/stable/ubuntu xenial/main i386 Packages
        100 /var/lib/dpkg/status

[Brendan Donegan (brendan-donegan)]

That's really strange, since in theory the CLI is generated from the API

[Blake Rouse (blake-rouse)]

The issue is that is_registered is on the anonymous handler only. It should also be on the signed in handler as well.