def shutdown

      get_list['list'].each do |re, (kl, op)|

        kl = (Ruote.constantize(kl) rescue nil)

        if (kl.instance_method(:shutdown) rescue false)
          initialize_participant(kl, op).shutdown
        end
      end
    end
def shutdown

      get_list['list'].each do |re, (kl, op)|

        kl = (Ruote.constantize(kl) rescue nil)

        if (kl.instance_method(:shutdown) rescue false)
          initialize_participant(kl, op).shutdown
        end
      end
    end
Calls #shutdown on any participant that sports this method.