Last  string `json:"l"`
	EOS   bool   `json:"eos,omitempty"`
}

func (b metacacheBlock) headerKV() map[string]string {
	json := jsoniter.ConfigCompatibleWithStandardLibrary
	v, err := json.Marshal(b)
	if err != nil {
		bugLogIf(context.Background(), err) // Unlikely
		return nil
	}
	return map[string]string{fmt.Sprintf("%s-metacache-part-%d", ReservedMetadataPrefixLower, b.n): string(v)}
}

func (ies *IAMEtcdStore) getUsersSysType() UsersSysType {
	return ies.usersSysType
}

func (ies *IAMEtcdStore) saveIAMConfig(ctx context.Context, item interface{}, itemPath string, opts ...options) error {
	data, err := json.Marshal(item)
	if err != nil {
		return err
	}
	if GlobalKMS != nil {
		data, err = config.EncryptBytes(GlobalKMS, data, kms.Context{
			minioMetaBucket: path.Join(minioMetaBucket, itemPath),
		})

		return
	}

	chEntries, err := listServerConfigHistory(ctx, objectAPI, true, count)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	data, err := json.Marshal(chEntries)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	password := cred.SecretKey
	econfigData, err := madmin.EncryptData(password, data)

	data := make([]byte, 4, config.Msgsize()+4)

	// Initialize the header.
	binary.LittleEndian.PutUint16(data[0:2], tierConfigFormat)
	binary.LittleEndian.PutUint16(data[2:4], tierConfigVersion)

	// Marshal the tier config
	return config.MarshalMsg(data)
}

// getDriver returns a warmBackend interface object initialized with remote tier config matching tierName

func (kvs KVS) MarshalJSON() ([]byte, error) {
	b := new(bytes.Buffer)
	b.Write([]byte("{"))
	for i, kv := range kvs {
		b.Write([]byte("\"" + kv.Key + "\"" + ":"))
		valBuf, err := json.Marshal(kv.Value)
		if err != nil {
			return nil, err
		}
		b.Write(valBuf)
		if i < len(kvs)-1 {
			b.Write([]byte(","))
		}
	}
	b.Write([]byte("}"))
	return b.Bytes(), nil
}

}

// Constructs xlMetaV1Object{} for given number of parts and converts it into bytes.
func getXLMetaBytes(totalParts int) []byte {
	xlSampleMeta := getSampleXLMeta(totalParts)
	xlMetaBytes, err := json.Marshal(xlSampleMeta)
	if err != nil {
		panic(err)
	}
	return xlMetaBytes
}

// Returns sample xlMetaV1Object{} for number of parts.
func getSampleXLMeta(totalParts int) xlMetaV1Object {

			t.Fatal(err)
		}
		vers = append(vers, xl.versions)
	}
	for _, v2 := range vers {
		for _, ver := range v2 {
			b, _ := json.Marshal(ver.header)
			t.Log(string(b))
			var x xlMetaV2Version
			_, _ = x.unmarshalV(0, ver.meta)
			b, _ = json.Marshal(x)
			t.Log(string(b), x.getSignature())
		}
	}

	for i := range vers {
		t.Run(fmt.Sprintf("non-strict-q%d", i), func(t *testing.T) {

	}

	return fi, nil
}

// Signature will return a signature that is expected to be the same across all disks.
func (j *xlMetaV2DeleteMarker) Signature() [4]byte {
	// Shallow copy
	c := *j

	// Marshal metadata
	crc := hashDeterministicBytes(c.MetaSys)
	c.MetaSys = nil
	if bts, err := c.MarshalMsg(metaDataPoolGet()); err == nil {
		crc ^= xxhash.Sum64(bts)
		metaDataPoolPut(bts)
	}

		t.Fatal(err)
	}

	ruleSet := make(map[string]struct{})
	for _, rule := range lc.Rules {
		ruleBytes, err := xml.Marshal(rule)
		if err != nil {
			t.Fatal(err)
		}
		ruleSet[string(ruleBytes)] = struct{}{}
	}
	for _, rule := range lc1.Rules {
		ruleBytes, err := xml.Marshal(rule)
		if err != nil {
			t.Fatal(err)
		}
		if _, ok := ruleSet[string(ruleBytes)]; !ok {

certificate policy OIDs with components larger than 31 bits. By default this
field is only used during parsing, when it is populated with policy OIDs, but
not used during marshaling. It can be used to marshal these larger OIDs, instead
of the existing PolicyIdentifiers field, by using the
[`x509usepolicies` setting.](/pkg/crypto/x509/#CreateCertificate).


### Go 1.21