anchor.diff:  %% which is added to json metadata.
   %% @end
   %%--------------------------------------------------------------------
  --spec prepare_data(od_harvester:batch_entry(), rejected_fields()) -> map().
  +-spec prepare_data(od_harvester:batch_entry(), {rejected_fields(), binary()}) -> map().
   prepare_data(BatchEntry, {RejectedFields, RejectionReason}) ->
       Payload = maps:get(<<"payload">>, BatchEntry, #{}),
       InternalParams = maps:with([<<"spaceId">>, <<"fileName">>], BatchEntry),
  
positive.code: 
  -define(INTERNAL_METADATA_KEY, <<"__onedata">>).
  -define(REJECTED_METADATA_KEY, <<"__rejected">>).
  
  -define(MAX_SUBMIT_RETRIES, 3).
  
  
negative.code:     end.
  
  
  %%--------------------------------------------------------------------
  %% @private
  %% @doc
  