anchor.diff:  -export([start_heartbeat/0,
            stop_heartbeat/0,
            heartbeat/0,
  +         update_manager_nodes/1,
            set_proc_auditor/1]).
   
   %% gen_server callbacks
  
positive.code: 
  handle_cast({set_proc_auditor, ProcAuditor}, State) ->
      {noreply, State#state{proc_auditor = ProcAuditor}};
  
  handle_cast({stop_heartbeat}, State) ->
      State#state{enable=false}.
  
negative.code: set_proc_auditor(ProcAuditor) ->
      gen_server:cast(?MODULE, {set_proc_auditor, ProcAuditor}).
  
  -spec(update_manager_nodes(list()) -> ok | {error, any()}).
  update_manager_nodes(Managers) ->
      gen_server:cast(?MODULE, {update_manager_nodes, Managers}).
  
  %%--------------------------------------------------------------------
  %% GEN_SERVER CALLBACKS
  