if !srcTimestamp.IsZero() {
				ondiskTimestamp, err := time.Parse(time.RFC3339Nano, lastTaggingTimestamp)
				// update tagging metadata only if replica  timestamp is newer than what's on disk
				if err != nil || (err == nil && ondiskTimestamp.Before(srcTimestamp)) {
					srcInfo.UserDefined[ReservedMetadataPrefixLower+TaggingTimestamp] = srcTimestamp.UTC().Format(time.RFC3339Nano)

	// execute the request.
	response, err = s.client.Do(req)
	c.Assert(err, nil)
	if s.signer == signerV4 {
		verifyError(c, response, "XAmzContentSHA256Mismatch", "The provided 'x-amz-content-sha256' header does not match what was computed.", http.StatusBadRequest)
	}
}

// Test deletes multiple objects and verifies server response.
func (s *TestSuiteCommon) TestDeleteMultipleObjects(c *check) {
	// generate a random bucket name.

}

// Tests sanity of attempting to copying each parts at offsets from an existing
// file and create a new object. Also validates if the written is same as what we
// expected.
func TestAPICopyObjectPartHandlerSanity(t *testing.T) {
	defer DetectTestLeak(t)()
	ExecExtendedObjectLayerAPITest(t, testAPICopyObjectPartHandlerSanity, []string{"CopyObjectPart"})
}