anchor.diff:                  State#state{last_tstamp = misc:time_to_epoch_ms_int(now())};
               _ -> State
           end,
  -    {reply, ok, NewState}.
  +    NewState.
   
   %%--------------------------------------------------------------------
   %% @private
  
positive.code: %%                                   {stop, Reason, State}
  %% @end
  %%--------------------------------------------------------------------
  handle_call({diag, Err}, _From, #state{last_tstamp = TStamp} = State) ->
      self() ! busy_marker,
      Now = misc:time_to_epoch_ms_int(now()),
      NewState =
  
negative.code: %%                                  {stop, Reason, State}
  %% @end
  %%--------------------------------------------------------------------
  handle_cast({diag, Err}, State) ->
      {noreply, do_diag(Err, State)};
  handle_cast(_Msg, State) ->
      {noreply, State}.
  
  