You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: v116.go
    path of file: ./repos/gitea/models/migrations/v1_11
    
    the code of the file until where you have to start completion: // Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package v1_11 //nolint

import (
	"xorm.io/xorm"
)

func ExtendTrackedTimes(x *xorm.Engine) error {
	type TrackedTime struct {
		Time    int64 `xorm:"NOT NULL"`
		Deleted bool  `xorm:"NOT NULL DEFAULT false"`
	}

	sess := x.NewSession()
	defer sess.Close()

	if err := ses
    
func ExtendTrackedTimes(x *xorm.Engine) error {
	type TrackedTime struct {
		Time    int64 `xorm:"NOT NULL"`
		Deleted bool  `xorm:"NOT NULL DEFAULT false"`
	}

	sess := x.NewSession()
	defer sess.Close()

	if err := sess.Begin(); err != nil {
		return err
	}

	if _, err := sess.Exec("DELETE FROM tracked_time WHERE time IS NULL"); err != nil {
		return err
	}

	if err := sess.Sync(new(TrackedTime)); err != nil {
		return err
	}

	return sess.Commit()
}