}

const (
	xlHeaderVersion = 2
	xlMetaVersion   = 3
)

func decodeXLHeaders(buf []byte) (versions int, b []byte, e error) {
	hdrVer, buf, e := msgp.ReadUintBytes(buf)
	if e != nil {
		return 0, buf, e
	}
	metaVer, buf, e := msgp.ReadUintBytes(buf)
	if e != nil {
		return 0, buf, e
	}
	if hdrVer > xlHeaderVersion {
		return 0, buf, fmt.Errorf("decodeXLHeaders: Unknown xl header version %d", metaVer)
	}

	o = msgp.AppendUint(o, uint(z))
	return
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *BitrotAlgorithm) UnmarshalMsg(bts []byte) (o []byte, err error) {
	{
		var zb0001 uint
		zb0001, bts, err = msgp.ReadUintBytes(bts)
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = BitrotAlgorithm(zb0001)
	}
	o = bts
	return
}

	versions           int
	headerVer, metaVer uint
}

func decodeXLHeaders(buf []byte) (x xlHeaders, b []byte, err error) {
	x.headerVer, buf, err = msgp.ReadUintBytes(buf)
	if err != nil {
		return x, buf, err
	}
	x.metaVer, buf, err = msgp.ReadUintBytes(buf)
	if err != nil {
		return x, buf, err
	}
	if x.headerVer > xlHeaderVersion {