func (r *Reader) UnreadRune() error {
	if r.i <= 0 {
		return errors.New("bytes.Reader.UnreadRune: at beginning of slice")
	}
	if r.prevRune < 0 {
		return errors.New("bytes.Reader.UnreadRune: previous operation was not ReadRune")
	}
	r.i = int64(r.prevRune)
	r.prevRune = -1
	return nil
}

// Seek implements the [io.Seeker] interface.

	if !errors.Is(err, grid.ErrDisconnected) {
		logger.LogAlwaysIf(ctx, "peers", err, errKind...)
	}
}

func peersLogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {
	if !errors.Is(err, grid.ErrDisconnected) {
		logger.LogOnceIf(ctx, "peers", err, id, errKind...)
	}
}

func bugLogIf(ctx context.Context, err error, errKind ...interface{}) {

	}

	if err := DB.Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user3 User
	DB.Preload("Languages").Preload("Friends").Find(&user3, "id = ?", user.ID)
	CheckUser(t, user2, user3)

	if err := DB.Session(&gorm.Session{FullSaveAssociations: true}).Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user4 User

				// Validate if the type string of the errors are an exact match.
				if err.Error() != testCase.expectedErr.Error() {
					if runtime.GOOS != globalWindowsOSName {
						t.Errorf("Case: %d %#v, expected: %s, got: %s", i+1, testCase, testCase.expectedErr, err)
					} else {
						var resultErrno, expectErrno uintptr
						if pathErr, ok := err.(*os.PathError); ok {
							if errno, pok := pathErr.Err.(syscall.Errno); pok {

	}

	if tx.Error != nil {
		t.Errorf("Should not raise any error, but got %v", tx.Error)
	}

	AssertObjEqual(t, result, data, "Name", "Gender", "Age")

	if err := DB.Where(data).Assign(ScannerValuerStruct{Age: sql.NullInt64{Int64: 18, Valid: true}}).FirstOrCreate(&result).Error; err != nil {
		t.Errorf("Should not raise any error, but got %v", err)
	}

	if result.Age.Int64 != 18 {

	p := Product{Code: "Invalid", Price: 100}
	if DB.Save(&p).Error == nil {
		t.Fatalf("An error from before create callbacks happened when create with invalid value")
	}

	if DB.Where("code = ?", "Invalid").First(&Product{}).Error == nil {
		t.Fatalf("Should not save record that have errors")
	}

	if DB.Save(&Product{Code: "dont_save", Price: 100}).Error == nil {

                    "title": "JsonApiError",
                    "required": ["errors"],
                    "type": "object",
                    "properties": {
                        "errors": {
                            "title": "Errors",
                            "type": "array",
                            "items": {"$ref": "#/components/schemas/Error"},
                        }
                    },
                },

}

// Validate NATSArgs fields
func (n NATSArgs) Validate() error {
	if !n.Enable {
		return nil
	}

	if n.Address.IsEmpty() {
		return errors.New("empty address")
	}

	if n.Subject == "" {
		return errors.New("empty subject")
	}

	if n.ClientCert != "" && n.ClientKey == "" || n.ClientCert == "" && n.ClientKey != "" {
		return errors.New("cert and key must be specified as a pair")
	}

                    "title": "JsonApiError",
                    "required": ["errors"],
                    "type": "object",
                    "properties": {
                        "errors": {
                            "title": "Errors",
                            "type": "array",
                            "items": {"$ref": "#/components/schemas/Error"},
                        }
                    },
                },

	user := *GetUser("update-belongs-to", Config{})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	user.Company = Company{Name: "company-belongs-to-association"}
	user.Manager = &User{Name: "manager-belongs-to-association"}
	if err := DB.Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user2 User