Volume: bucket,
			Name:   e.name,
			Versions: []FileInfo{
				{
					Volume: bucket,
					Name:   e.name,
					Mode:   uint32(os.ModeDir),
				},
			},
		}, nil
	}
	// Too small gains to reuse cache here.
	return getFileInfoVersions(e.metadata, bucket, e.name, false)
}

// metaCacheEntries is a slice of metacache entries.
type metaCacheEntries []metaCacheEntry

// less function for sorting.