instance method batch_on_loaded_relation

# File activerecord/lib/active_record/relation/batches.rb, line 339
      def batch_on_loaded_relation(relation:, start:, finish:, order:, batch_limit:)
        records = relation.to_a

        if start || finish
          records = records.filter do |record|
            id = record.id

            if order == :asc
              (start.nil? || id >= start) && (finish.nil? || id <= finish)
            else
              (start.nil? || id <= start) && (finish.nil? || id >= finish)
            end
          end
        end

        records.sort_by!(&:id)

        if order == :desc
          records.reverse!
        end

        records.each_slice(batch_limit) do |subrecords|
          subrelation = relation.spawn
          subrelation.load_records(subrecords)

          yield subrelation
        end

        nil
      end