binary.LittleEndian.PutUint16(xlVersionCurrent[0:2], xlVersionMajor)
	binary.LittleEndian.PutUint16(xlVersionCurrent[2:4], xlVersionMinor)
}

// checkXL2V1 will check if the metadata has correct header and is a known major version.
// The remaining payload and versions are returned.
func checkXL2V1(buf []byte) (payload []byte, major, minor uint16, e error) {
	if len(buf) <= 8 {
		return payload, 0, 0, fmt.Errorf("xlMeta: no data")
	}

}

// xlMetaV2TrimData will trim any data from the metadata without unmarshalling it.
// If any error occurs the unmodified data is returned.
func xlMetaV2TrimData(buf []byte) []byte {
	metaBuf, min, maj, err := checkXL2V1(buf)
	if err != nil {
		return buf
	}
	if maj == 1 && min < 1 {
		// First version to carry data.
		return buf
	}
	// Skip header
	_, metaBuf, err = msgp.ReadBytesZC(metaBuf)
	if err != nil {