rabl pagination without object roots?

gistfile1.rb

# @object is a paginated array of questions

collection @object, root: 'collection', object_root: false

attributes :question_text, :created_at, :updated_at

#=> {"collection": [{"question_text": "foo bar", "created_at": "...", "updated_at": "..."}, {...}, {...}]}

# I want this:
#=> {"collection": [{"question_text": "foo bar", "created_at": "...", "updated_at": "..."}, {...}, {...}], "page": 1, "total_pages": 10}
# glue? node? wtf?