Logical represenatation of the shard of the sharded directory. Please note
that it only semantically different from AdvancedDirectoryLayout, in
practice they are the same and interpretation should vary based on view. If
viewed form root position it is AdvancedDirectoryLayout and it's mtimemode field to be respected, otherwise it is DirectoryShard and it's
mtime and mode field to be ignored.
Logical represenatation of the shard of the sharded directory. Please note that it only semantically different from
AdvancedDirectoryLayout, in practice they are the same and interpretation should vary based on view. If viewed form root position it isAdvancedDirectoryLayoutand it'smtimemodefield to be respected, otherwise it isDirectoryShardand it'smtimeandmodefield to be ignored.