# File lib/kwala/lib/cycle_detector.rb, line 382
    def print_cluster_members(mems, padding)
      #group into 4s
      groupings = Array.new
      cgroup = nil

      mems.each_with_index do |m, i|
        if ( i % 4 == 0)
          cgroup = Array.new
          groupings<< cgroup
        end
        cgroup << m
      end

      groupings.each do |vals|
        puts padding + "{ rank = same; "
        puts padding + " \"" + vals.join("\"; \"") + "\";"
        vals.each { |v| @visited[v] = true }

        puts padding + "}", ""
      end

    end