# File lib/table_print/row_group.rb, line 183
    def absorb_children(column_names, rollup)
      @children.each do |group|
        next unless can_absorb?(group)
        group.skip_first_row!

        column_names.collect do |name|
          next unless group.children and group.children.length > 0
          value = group.children.first.cells[name]
          rollup[name] = value if value
        end
      end
    end