api.array :checklists, api_meta(:total_count => @checklists.size) do
  @checklists.each do |checklist|
    api.checklist do
      api.id         checklist.id
      api.issue_id   checklist.issue_id
      api.subject    checklist.subject
      api.is_done    checklist.is_done
      api.position   checklist.position

      api.created_at checklist.created_at
      api.updated_at checklist.updated_at
    end
  end
end