anchor.diff:      %% Verify the membership is correct.
       lists:foreach(VerifyFun, Nodes),
   
  +    %% Verify forward message functionality.
  +    lists:foreach(fun({_Name, Node}) ->
  +                    ok = check_forward_message(Node, Manager)
  +                  end, Nodes),
  +
       %% Stop nodes.
       stop(Nodes),
   
  
positive.code: 
      StartFun = fun({_Name, Node}) ->
                          %% Start partisan.
                          {ok, _} = rpc:call(Node, application, ensure_all_started, [partisan])
                     end,
      lists:foreach(StartFun, Nodes),
  
      ct:pal("Clustering nodes."),
  
negative.code:                       end, Active1)
                    end,
      lists:foreach(SymmetryFun, Nodes),
  
      %% Verify forward message functionality.
      lists:foreach(fun({_Name, Node}) ->
                      ok = check_forward_message(Node, Manager)
                    end, Nodes),
  
      %% Stop nodes.
      stop(Nodes),
  