def next_page
      raise Ork::NoNextPage.new 'There is no next page' unless has_next_page?

      self.class.new(@model,
                     @index,
                     @query,
                     @options.merge(continuation: keys.continuation))
    end
def next_page
      raise Ork::NoNextPage.new 'There is no next page' unless has_next_page?

      self.class.new(@model,
                     @index,
                     @query,
                     @options.merge(continuation: keys.continuation))
    end
Get a new ResultSet fetch for the next page