func (s *storageRESTServer) writeErrorResponse(w http.ResponseWriter, err error) {
	err = unwrapAll(err)
	switch err {
	case errDiskStale:
		w.WriteHeader(http.StatusPreconditionFailed)
	case errFileNotFound, errFileVersionNotFound:
		w.WriteHeader(http.StatusNotFound)
	case errInvalidAccessKeyID, errAccessKeyDisabled, errNoAuthToken, errMalformedAuth, errAuthentication, errSkewedAuthTime:
		w.WriteHeader(http.StatusUnauthorized)

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"encoding/json"
	"encoding/xml"
	"errors"
	"fmt"
	"io"
	"net/http"
	"path"
	"time"

	"github.com/minio/minio-go/v7"
	objectlock "github.com/minio/minio/internal/bucket/object/lock"
	"github.com/minio/minio/internal/bucket/replication"
	xhttp "github.com/minio/minio/internal/http"

		userDefined["content-type"] = mimedb.TypeByExtension(path.Ext(object))
	}

	// if storageClass is standard no need to save it as part of metadata.
	if userDefined[xhttp.AmzStorageClass] == storageclass.STANDARD {
		delete(userDefined, xhttp.AmzStorageClass)
	}

	// Fill all the necessary metadata.
	// Update `xl.meta` content on each disks.
	for index := range partsMetadata {

	}
	result.Endpoint = rp.String()
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, reqURL.String(), reader)
	if err != nil {
		result.Error = err.Error()
		return
	}
	client := &http.Client{
		Transport: globalRemoteTargetTransport,
	}
	resp, err := client.Do(req)
	if err != nil {
		result.Error = err.Error()
		return
	}
	defer xhttp.DrainBody(resp.Body)

// out of HTTP "chunked" format before returning it.
// The s3ChunkedReader returns io.EOF when the final 0-length chunk is read.
//
// NewChunkedReader is not needed by normal applications. The http package
// automatically decodes chunking when reading response bodies.
func newSignV4ChunkedReader(req *http.Request, trailer bool) (io.ReadCloser, APIErrorCode) {

	}

	for i, testCase := range testCases {
		// creating an input HTTP request.
		// Only the headers are relevant for this particular test.
		inputReq, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
		if err != nil {
			t.Fatalf("Error initializing input HTTP request: %v", err)
		}
		if testCase.inputQueryKey != "" {
			q := inputReq.URL.Query()

	switch r.Method {
	case http.MethodGet, http.MethodHead:
		if crypto.S3.IsRequested(headers) || crypto.S3KMS.IsRequested(headers) {
			return false, errInvalidEncryptionParameters
		}
	}

	_, encrypted = crypto.IsEncrypted(info.UserDefined)
	if !encrypted && crypto.SSEC.IsRequested(headers) && r.Header.Get(xhttp.AmzCopySource) == "" {
		return false, errInvalidEncryptionParameters
	}

			if r.ObjInfo.VersionID != "" {
				values.Set(xhttp.VersionID, r.ObjInfo.VersionID)
			}
		}
		var req *http.Request
		var reqV2 *http.Request
		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
		rec := httptest.NewRecorder()
		// construct HTTP request for copy object.

	toBeRestored := make(map[string]string)
	toBeRestored[xhttp.AmzRestore] = ongoingRestoreObj().String()

	restored := make(map[string]string)
	restored[xhttp.AmzRestore] = completedRestoreObj(time.Now().UTC().Add(time.Hour)).String()

	restoredExpired := make(map[string]string)
	restoredExpired[xhttp.AmzRestore] = completedRestoreObj(time.Now().UTC().Add(-time.Hour)).String()

	j.MetaSys[metaTierName] = []byte(fi.TransitionTier)
}

func (j *xlMetaV2Object) RemoveRestoreHdrs() {
	delete(j.MetaUser, xhttp.AmzRestore)
	delete(j.MetaUser, xhttp.AmzRestoreExpiryDays)
	delete(j.MetaUser, xhttp.AmzRestoreRequestDate)
}

// Signature will return a signature that is expected to be the same across all disks.
func (j *xlMetaV2Object) Signature() [4]byte {