# File lib/innodb/undo_record.rb, line 19
  def new_subordinate(undo_page, position)
    new_undo_record = self.class.new(undo_page, position)
    new_undo_record.undo_log = undo_log
    new_undo_record.index_page = index_page

    new_undo_record
  end