o = append(o, 0xa3, 0x72, 0x65, 0x63)
	o = msgp.AppendBool(o, z.recursive)
	// string "v"
	o = append(o, 0xa1, 0x76)
	o = msgp.AppendUint8(o, z.dataVersion)
	return
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *metacache) UnmarshalMsg(bts []byte) (o []byte, err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
	if err != nil {

well defined data structure. To understand `xl.meta` here are the few things to start with

`xl.meta` carries first 8 bytes an XL header which describes the current format and the format version,
allowing the unmarshaller's to automatically use the right data structures to parse the subsequent content in the stream.

### v1.0

| Entry     | Encoding    | Content
| ----------|-------------|----------------------------------------

	}
	// string "Checksum"
	o = append(o, 0xa8, 0x43, 0x68, 0x65, 0x63, 0x6b, 0x73, 0x75, 0x6d)
	o = msgp.AppendString(o, z.Checksum)
	return
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *ServerSystemConfig) UnmarshalMsg(bts []byte) (o []byte, err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
	if err != nil {

}

// xlMetaV2VersionHeaderV2 is a version 2 of xlMetaV2VersionHeader before EcN and EcM were added.
type xlMetaV2VersionHeaderV2 struct {
	*xlMetaV2VersionHeader
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *xlMetaV2VersionHeaderV2) UnmarshalMsg(bts []byte) (o []byte, err error) {
	z.EcN, z.EcN = 0, 0
	var zb0001 uint32
	zb0001, bts, err = msgp.ReadArrayHeaderBytes(bts)
	if err != nil {

	o = msgp.AppendInt(o, z.Limit)
	// string "DiskID"
	o = append(o, 0xa6, 0x44, 0x69, 0x73, 0x6b, 0x49, 0x44)
	o = msgp.AppendString(o, z.DiskID)
	return
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *WalkDirOptions) UnmarshalMsg(bts []byte) (o []byte, err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
	if err != nil {

	// string "BitrotScan"
	o = append(o, 0xaa, 0x42, 0x69, 0x74, 0x72, 0x6f, 0x74, 0x53, 0x63, 0x61, 0x6e)
	o = msgp.AppendBool(o, z.BitrotScan)
	return
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *PartialOperation) UnmarshalMsg(bts []byte) (o []byte, err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
	if err != nil {

func (m *message) setZeroPayloadFlag() {
	m.Flags &^= FlagPayloadIsZero
	if len(m.Payload) == 0 && m.Payload != nil {
		m.Flags |= FlagPayloadIsZero
	}
}

type receiver interface {
	msgp.Unmarshaler
	Op() Op
}

type sender interface {
	msgp.MarshalSizer
	Op() Op
}

type connectReq struct {
	ID    [16]byte
	Host  string
	Time  time.Time
	Token string
}

// BatchJobExpirePurge type accepts non-negative versions to be retained
type BatchJobExpirePurge struct {
	line, col      int
	RetainVersions int `yaml:"retainVersions" json:"retainVersions"`
}

var _ yaml.Unmarshaler = &BatchJobExpirePurge{}

// UnmarshalYAML - BatchJobExpirePurge extends unmarshal to extract line, col
func (p *BatchJobExpirePurge) UnmarshalYAML(val *yaml.Node) error {
	type purge BatchJobExpirePurge
	var tmp purge

	o, err = z.TargetReplicationResyncStatus.MarshalMsg(o)
	if err != nil {
		err = msgp.WrapError(err, "TargetReplicationResyncStatus")
		return
	}
	return
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *SiteResyncStatus) UnmarshalMsg(bts []byte) (o []byte, err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, bts, err = msgp.ReadMapHeaderBytes(bts)
	if err != nil {

	}
	return nil
}

type xlMetaV2VersionHeaderV2 struct {
	VersionID [16]byte
	ModTime   int64
	Signature [4]byte
	Type      uint8
	Flags     uint8
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *xlMetaV2VersionHeaderV2) UnmarshalMsg(bts []byte) (o []byte, e error) {
	var zb0001 uint32
	zb0001, bts, e = msgp.ReadArrayHeaderBytes(bts)
	if e != nil {
		e = msgp.WrapError(e)
		return o, e
	}