anchor.diff:      {noreply, State#state{managers  = Managers}};
   
   handle_cast({stop_heartbeat}, State) ->
  -    State#state{running = false}.
  +    {noreply, State}.
   
   
   %% Function: handle_info(Info, State) -> {noreply, State}          |
  
positive.code: %%                                      {noreply, State, Timeout} |
  %%                                      {stop, Reason, State}
  %% Description: Handling cast messages
  handle_cast({start_heartbeat}, #state{running = false} = State) ->
      {noreply, State};
  handle_cast({start_heartbeat}, State) ->
      case catch maybe_heartbeat(State#state{running = false}) of
          {'EXIT', _Reason} ->
              {noreply, State};
          NewState ->
  
negative.code:     Redundancies  = ?rnd_nodes_from_ring(),
      NodesAndState = [{Node, State} ||
                          #redundant_node{node = Node,
                                          available = State} <- Redundancies],
      exec_1(ServerType, Managers, NodesAndState, Callback).
  
  
  