anchor.diff:      ClientsFromMarathon = clients_from_marathon(),
       ServersFromMarathon = servers_from_marathon(),
       Nodes = sets:union(ClientsFromMarathon, ServersFromMarathon),
  -    [{ServerName, _, _}|_] = sets:to_list(ServersFromMarathon),
   
       %% Build the graph.
       Graph = digraph:new(),
  
positive.code:                 {true, Visited1},
                  ordsets:subtract(Out, Visited1)
              ),
              {SymmetricViews, ordsets:union(VisitedNodes, Out)};
          false ->
              {false, ordsets:new()}
  
negative.code: 
      Orphaned = sets:fold(GraphFun, [], Nodes),
  
      {SymmetricViews, VisitedNames} = breath_first(node(), Graph, ordsets:new()),
      AllNodesVisited = sets:size(Nodes) == length(VisitedNames),
  
      Connected = SymmetricViews andalso AllNodesVisited,
  