anchor.diff:  
   data_spec(#op_req{operation = update, gri = #gri{aspect = dir_stats_service_state}}) -> #{
       required => #{
  -        <<"dirStatsServiceEnabled">> => {boolean, any}
  +        <<"enabled">> => {boolean, any}
       }
   }.
   
  
positive.code: %%--------------------------------------------------------------------
  -spec update(middleware:req()) -> middleware:update_result().
  update(#op_req{gri = #gri{id = SpaceId, aspect = dir_stats_service_state}, data = Data}) ->
      case maps:get(<<"dirStatsServiceEnabled">>, Data) of
          true -> dir_stats_service_state:enable(SpaceId);
          false -> dir_stats_service_state:disable(SpaceId)
      end.
  
negative.code:         ?ERROR_DIR_STATS_NOT_READY-> {<<"initializing">>, undefined}
      end,
      {ok, value, maps_utils:remove_undefined(#{
          <<"enforcedByAccounting">> => maps:get(accounting_enabled, SpaceSupportOpts),
          <<"status">> => Status,
          <<"since">> => Since
      })}.
  
  