var lc Lifecycle
	if err := xml.NewDecoder(r).Decode(&lc); err != nil {
		return nil, err
	}
	// assign a unique id for rules with empty ID
	for i := range lc.Rules {
		if lc.Rules[i].ID == "" {
			lc.Rules[i].ID = uuid.New().String()
		}
	}
	return &lc, nil
}

// ParseLifecycleConfig - parses data in given reader to Lifecycle.

		if err := discard(tr.r, tr.curr.physicalRemaining()); err != nil {
			return nil, err
		}
		if _, err := tryReadFull(tr.r, tr.blk[:tr.pad]); err != nil {
			return nil, err
		}
		tr.pad = 0

		hdr, rawHdr, err := tr.readHeader()
		if err != nil {
			return nil, err
		}
		if err := tr.handleRegularFile(hdr); err != nil {
			return nil, err
		}
		format.mayOnlyBe(hdr.Format)

		s           string
		startIdx    int
		length      int
		resExpected string
		errExpected error
	}{
		{"abcd", 1, 1, "a", nil},
		{"abcd", -1, 1, "a", nil},
		{"abcd", 999, 999, "", nil},
		{"", 999, 999, "", nil},
		{"测试abc", 1, 1, "测", nil},
		{"测试abc", 5, 5, "c", nil},
	}

	for i, tc := range evalCases {
		res, err := evalSQLSubstring(tc.s, tc.startIdx, tc.length)

			if err := adb("push", modDir, deviceModDir); err != nil {
				return 0, err
			}
		} else {
			if err := adb("exec-out", "mkdir", "-p", deviceCwd); err != nil {
				return 0, err
			}
			if err := adbCopyTree(deviceCwd, importPath); err != nil {
				return 0, err
			}

			// Copy .go files from the package.
			goFiles, err := filepath.Glob("*.go")
			if err != nil {
				return 0, err
			}

	}{
		{
			[]clause.Interface{clause.Update{}},
			"UPDATE `users`", nil,
		},
		{
			[]clause.Interface{clause.Update{Modifier: "LOW_PRIORITY"}},
			"UPDATE LOW_PRIORITY `users`", nil,
		},
		{
			[]clause.Interface{clause.Update{Table: clause.Table{Name: "products"}, Modifier: "LOW_PRIORITY"}},
			"UPDATE LOW_PRIORITY `products`", nil,
		},
	}

	for idx, result := range results {

	if l.waitMutex.Load() > lockMutexWaitLimit {
		l.locksOverloaded.Add(1)
		return false, nil
	}
	// Wait for mutex
	defer l.getMutex()()
	if ctx.Err() != nil {
		return false, ctx.Err()
	}
	if !l.canTakeLock(args.Resources...) {
		// Not all locks can be taken on resources,
		// reject it completely.
		return false, nil
	}

	// No locks held on the all resources, so claim write

	_, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{})
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	aclHeader := r.Header.Get(xhttp.AmzACL)
	if aclHeader == "" {
		acl := &accessControlPolicy{}
		if err = xmlDecoder(r.Body, acl, r.ContentLength); err != nil {
			if terr, ok := err.(*xml.SyntaxError); ok && terr.Msg == io.EOF.Error() {

	case madmin.MinIO:
		d, err = newWarmBackendMinIO(*tier.MinIO, tier.Name)
	default:
		return nil, errTierTypeUnsupported
	}
	if err != nil {
		tierLogIf(ctx, err)
		return nil, errTierInvalidConfig
	}

	if probe {
		if err = checkWarmBackend(ctx, d); err != nil {
			return nil, err
		}
	}

	return d, nil

	quorumFormat, err = getFormatErasureInQuorum(formats)
	if err != nil {
		t.Fatal(err)
	}

	badFormat := *quorumFormat
	badFormat.Erasure.Sets = nil
	if err = formatErasureV3Check(quorumFormat, &badFormat); err == nil {
		t.Fatal("Unexpected success")
	}

	badFormatUUID := *quorumFormat
	badFormatUUID.Erasure.Sets[0][0] = "bad-uuid"
	if err = formatErasureV3Check(quorumFormat, &badFormatUUID); err == nil {

}

func TestToErrIsNil(t *testing.T) {
	if toObjectErr(nil) != nil {
		t.Errorf("Test expected to return nil, failed instead got a non-nil value %s", toObjectErr(nil))
	}
	if toStorageErr(nil) != nil {
		t.Errorf("Test expected to return nil, failed instead got a non-nil value %s", toStorageErr(nil))
	}
	ctx := t.Context()
	if toAPIError(ctx, nil) != noError {