presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/storage/BackupStats.java/BackupStats/getCopyToBackupTimeInMilliSeconds
class BackupStats:    @Managed
    @Nested
    public DistributionStat getCopyToBackupTimeInMilliSeconds()
    {
        return copyToBackupTimeInMilliSeconds;
    }