anchor.diff:                  pending=Pending,
                   active=Active,
                   passive=Passive,
  +                reserved=Reserved,
  +                tag=Tag,
                   suspected=Suspected,
                   connections=Connections,
                   max_active_size=MaxActiveSize,
  
positive.code: %% network delay; if so, we have to remove this element from the passive
  %% view, otherwise it will exist in both places.
  %%
  add_to_active_view({Name, _, _}=Peer,
                     #state{myself=Myself,
                            active=Active0,
                            passive=Passive0,
                            max_active_size=MaxActiveSize}=State0) ->
      lager:info("Adding ~p to active view on ~p", [Peer, Myself]),
  
  
negative.code:     is_in_passive_view(Peer, Passive) andalso is_not_empty(Suspected).
  
  %% @private
  perform_join(Peer, Tag,
               #state{myself=Myself,
                      active=Active0,
                      pending=Pending,
                      suspected=Suspected0,
                      connections=Connections0}=State0) ->
      %% Add to active view.
      State = #state{active=Active} = add_to_active_view(Peer, Tag, State0),
  
      %% Establish connections.
      Connections = establish_connections(Pending,
                                          Active,
                                          Connections0),
  
      %% Send neighbor_accepted message to origin, that will
      %% update it's view.
      %%
      do_send_message(Peer,
                      {neighbor_accepted, Myself, Tag, Peer},
                      Connections),
  
      %% Notify with event.
  