{"-", time.Time{}, false},
		{"+", time.Time{}, false},
		{"-1.-1", time.Time{}, false},
		{"99999999999999999999999999999999999999999999999", time.Time{}, false},
		{"0.123456789abcdef", time.Time{}, false},
		{"foo", time.Time{}, false},
		{"\x00", time.Time{}, false},
		{"𝟵𝟴𝟳𝟲𝟱.𝟰𝟯𝟮𝟭𝟬", time.Time{}, false}, // Unicode numbers (U+1D7EC to U+1D7F5)
		{"98765﹒43210", time.Time{}, false}, // Unicode period (U+FE52)
	}

	var mtime time.Time
	if mtimeStr != "" {
		mtime, err = time.Parse(time.RFC3339Nano, mtimeStr)
		if err != nil {
			return opts, fmt.Errorf("Unable to parse %s, failed with %w", xhttp.MinIOSourceMTime, err)
		}
	}
	retaintimeStr := strings.TrimSpace(hdr.Get(xhttp.MinIOSourceObjectRetentionTimestamp))
	var retaintimestmp time.Time
	if retaintimeStr != "" {

		}
	}

	modTime = UTCNow() // We only preserve modTime if dstOpts.MTime is true.
	// in all other cases mtime is latest.

	fi.VersionID = versionID // set any new versionID we might have created
	fi.ModTime = modTime     // set modTime for the new versionID
	if !dstOpts.MTime.IsZero() {
		modTime = dstOpts.MTime
		fi.ModTime = dstOpts.MTime
	}
	// check inline before overwriting metadata.