hasTags := len(r.Flags.Filter.Tags) != 0
	isMetadata := len(r.Flags.Filter.Metadata) != 0
	isStorageClassOnly := len(r.Flags.Filter.Metadata) == 1 && strings.EqualFold(r.Flags.Filter.Metadata[0].Key, xhttp.AmzStorageClass)

	skip := func(oi ObjectInfo) (ok bool) {
		if r.Flags.Filter.OlderThan > 0 && time.Since(oi.ModTime) < r.Flags.Filter.OlderThan {

	},
	ErrFilterNameInvalid: {
		Code:           "InvalidArgument",
		Description:    "filter rule name must be either prefix or suffix",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrFilterNamePrefix: {
		Code:           "InvalidArgument",
		Description:    "Cannot specify more than one prefix rule in a filter.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrFilterNameSuffix: {