anchor.diff:  %%                                  {stop, Reason, State}
   %% @end
   %%--------------------------------------------------------------------
  +handle_cast({diag, Err}, State) ->
  +    {noreply, do_diag(Err, State)};
   handle_cast(_Msg, State) ->
       {noreply, State}.
   
  
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:                 State#state{last_tstamp = misc:time_to_epoch_ms_int(now())};
              _ -> State
          end,
      NewState.
  
  %%--------------------------------------------------------------------
  %% @private
  