def paginate_by_max_id(limit, max_id = nil, since_id = nil)
      query = order(arel_table[:last_status_id].desc).limit(limit)
      query = query.where(arel_table[:last_status_id].lt(max_id)) if max_id.present?
      query = query.where(arel_table[:last_status_id].gt(since_id)) if since_id.present?
      query