presto-tpch/src/main/java/io/prestosql/plugin/tpch/statistics/TableStatisticsDataRepository.java/TableStatisticsDataRepository/tableStatisticsDataFilename
class TableStatisticsDataRepository:    private String tableStatisticsDataFilename(TpchTable<?> table, Optional<TpchColumn<?>> partitionColumn, Optional<String> partitionValue)
    {
        Optional<String> partitionDescription = getPartitionDescription(partitionColumn, partitionValue);
        return table.getTableName() + partitionDescription.map(value -> "." + value).orElse("");
    }