PartitionedPrefix
class PartitionedPrefix
Amazon S3 keys for log objects are partitioned in the following format:
[DestinationPrefix][SourceAccountId]/[SourceRegion]/[SourceBucket]/[YYYY]/[MM]/[DD]/[YYYY]-[MM]-[DD]-[hh]-[mm]-[ss]-[UniqueString]
PartitionedPrefix defaults to EventTime delivery when server access logs are delivered.