find_nth_with_limit

# File activerecord/lib/active_record/relation/finder_methods.rb, line 551
    def find_nth_with_limit(index, limit)
      # TODO: once the offset argument is removed from find_nth,
      # find_nth_with_limit_and_offset can be merged into this method
      relation = if order_values.empty? && primary_key
                   order(arel_attribute(primary_key).asc)
                 else
                   self
                 end

      relation = relation.offset(index) unless index.zero?
      relation.limit(limit).to_a
    end