presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/metadata/ShardCleanerConfig.java/ShardCleanerConfig/setBackupCleanerInterval
class ShardCleanerConfig:    @Config("raptor.backup-cleaner-interval")
    @ConfigDescription("How often to check for backup shards that need to be cleaned up")
    public ShardCleanerConfig setBackupCleanerInterval(Duration backupCleanerInterval)
    {
        this.backupCleanerInterval = backupCleanerInterval;
        return this;
    }