docs: public static Sequence<Row> postAggregate(final GroupByQuery query, IncrementalIndex index)
    {
      return Sequences.map(
          Sequences.simple(index.iterableWithPostAggregations(query.getPostAggregatorSpecs(), query.isDescending())),
          new Function<Row, Row>()
          {
            @Override
            public Row apply(Row input)
            {
              final MapBasedRow row = (MapBasedRow) input;
              return new MapBasedRow(
                  query.getGranularity()
                       .toDateTime(row.getTimestampFromEpoch()),
                  row.getEvent()
              );
            }
          }
      );
    }