Restapi: Listing Ideas by status

Hi guys, 

I'm trying to perform a rest call to perform something similar to Idea Status widget ( http://lithosphere.lithium.com/t5/support-knowledge-base/Statuses-for-Idea-Exchange-boards/ta-p/54842 ) where I can filter the list of ideas just by their status.

I looked at the Lithium documentation and it recommends using something like this:

boards/id/[board id]/threads/for/message_statuses/key/status_key

I tried this for several existing status keys, for example 'New' (

/restapi/vc/boards/id/<id of Ideas board>/threads/for/message_statuses/key/New )

 but didn't get any results.

I noticed that for Ideas that querying for status ID ( 'threads/for/message_statuses/id/' ) just reports "Invalid path element." . Is there any other rest call that can be used to list ideas by their status key?