# File lib/rbot/messagemapper.rb, line 593
    def  inspectinspect
      when_str = @requirements.empty? ? "" : " when #{@requirements.inspect}"
      default_str = @defaults.empty? ? "" : " || #{@defaults.inspect}"
      "<#{self.class.to_s} #{@items.map { |c| c.inspect }.join(' ').inspect}#{default_str}#{when_str}>"
    end