func (d *dataUsageCache) StringAll() string {
	// Remove bloom filter from print.
	s := fmt.Sprintf("info:%+v\n", d.Info)
	for k, v := range d.Cache {
		s += fmt.Sprintf("\t%v: %+v\n", k, v)
	}
	return strings.TrimSpace(s)
}

// String returns a human readable representation of the string.
func (h dataUsageHash) String() string {
	return string(h)
}

// Key returns the key.
func (h dataUsageHash) Key() string {

				b0 := ""
				if ndjson {
					b, _ := json.Marshal(file)
					b0 = fmt.Sprintf("%s: ", string(b))
				}
				b, err := decode(r, file)
				if err != nil {
					return err
				}
				b = bytes.TrimSpace(b)
				if !ndjson {
					b = bytes.TrimFunc(b, func(r rune) bool {
						return r == '{' || r == '}' || r == '\n' || r == '\r'
					})
				}

				toPrint = append(toPrint, fmt.Sprintf("%s%s", b0, string(b)))

		return
	}

	// Read escaped copy source path to check for parameters.
	cpSrcPath := r.Header.Get(xhttp.AmzCopySource)
	var vid string
	if u, err := url.Parse(cpSrcPath); err == nil {
		vid = strings.TrimSpace(u.Query().Get(xhttp.VersionID))
		// Note that url.Parse does the unescaping
		cpSrcPath = u.Path
	}

	srcBucket, srcObject := path2BucketObject(cpSrcPath)

pkg bytes, func TrimLeftFunc([]uint8, func(int32) bool) []uint8
pkg bytes, func TrimRight([]uint8, string) []uint8
pkg bytes, func TrimRightFunc([]uint8, func(int32) bool) []uint8
pkg bytes, func TrimSpace([]uint8) []uint8
pkg bytes, method (*Buffer) Bytes() []uint8
pkg bytes, method (*Buffer) Len() int
pkg bytes, method (*Buffer) Next(int) []uint8
pkg bytes, method (*Buffer) Read([]uint8) (int, error)