anchor.diff:      {ok, #state{type      = ServerType,
                   interval  = Interval,
                   timestamp = 0,
  -                running    = true,
                   partner_manager = Partner,
                   managers  = Managers,
                   callback  = Callback
  
positive.code: -record(state, {type              :: atom(),
                  interval  = 0     :: non_neg_integer(),
                  timestamp = 0     :: non_neg_integer(),
                  running   = false :: boolean(),
                  managers = []     :: [atom()],
                  partner_manager   :: atom(),
                  proc_auditor      :: atom(),
  
negative.code:     {noreply, State#state{managers  = Managers}};
  
  handle_cast({stop_heartbeat}, State) ->
      {noreply, State}.
  
  
  %% Function: handle_info(Info, State) -> {noreply, State}          |
  