# File lib/nanoc/cli/commands/show-data.rb, line 99
    def print_item_rep_outdatedness(items, compiler)
      self.print_header('Item representation outdatedness')

      self.sorted_reps_with_prev(items) do |rep, prev|
        puts if prev
        puts "item #{rep.item.identifier}, rep #{rep.name}:"
        outdatedness_reason = compiler.outdatedness_checker.outdatedness_reason_for(rep)
        if outdatedness_reason
          puts "  is outdated: #{outdatedness_reason.message}"
        else
          puts "  is not outdated"
        end
      end
    end