anchor.diff:      %% If not, stop traversal
       In = ordsets:from_list(digraph:in_neighbours(Graph, Root)),
       Out = ordsets:from_list(digraph:out_neighbours(Graph, Root)),
  +
  +    lager:info("In ~p, root ~p", [In, Root]),
  +    lager:info("Out ~p, root ~p", [Out, Root]),
   
       Visited1 = ordsets:union(Visited0, [Root]),
   
  
positive.code:                 {true, Visited1},
                  ordsets:subtract(Out, Visited1)
              ),
              {SymmetricViews, ordsets:union(VisitedNodes, Out)};
          false ->
              {false, ordsets:new()}
  
negative.code:     ClientsFromMarathon = clients_from_marathon(),
      ServersFromMarathon = servers_from_marathon(),
      Nodes = sets:union(ClientsFromMarathon, ServersFromMarathon),
  
      %% Build the graph.
      Graph = digraph:new(),
  