anchor.diff:  
       {reply, ok, State};
   
  -handle_message({neighbor, Peer, Priority, Sender},
  +handle_message({neighbor_request, Peer, Priority, Sender},
                  #state{myself=Myself,
                         connections=Connections}=State0) ->
       State = case neighbor_acceptable(Priority, State0) of
  
positive.code:     State#state{suspected=Suspected}.
  
  %% @private
  send_neighbor(Peer, #state{myself=Myself,
                             active=Active0,
                             connections=Connections}=State) ->
      Priority = case sets:size(Active0) of
          0 ->
              high;
  
negative.code:                     %% Send neighbor request to peer asking it to
                      %% replace a suspected node.
                      %%
                      State = send_neighbor_request(Peer, State0#state{pending=Pending}),
  
                      %% Notify with event.
                      notify(State),
  