type WalkOptions struct {
	Filter       func(info FileInfo) bool // return WalkFilter returns 'true/false'
	Marker       string                   // set to skip until this object
	LatestOnly   bool                     // returns only latest versions for all matching objects
	AskDisks     string                   // dictates how many disks are being listed

						disks[i], disks[j] = disks[j], disks[i]
					})
					fallbackDisks = disks[askDisks:]
					disks = disks[:askDisks]
				}

				requestedVersions := 0
				if opts.LatestOnly {
					requestedVersions = 1
				}

				// However many we ask, versions must exist on ~50%
				listingQuorum := (askDisks + 1) / 2

				// How to resolve partial results.