}

func (p *processor) Match(fc func(*DB) bool) *callback {
	return &callback{match: fc, processor: p}
}

func (p *processor) Register(name string, fn func(*DB)) error {
	return (&callback{processor: p}).Register(name, fn)
}

func (p *processor) Remove(name string) error {
	return (&callback{processor: p}).Remove(name)
}

	"context"
	"database/sql"
	"database/sql/driver"
	"encoding/gob"
	"encoding/json"
	"fmt"
	"reflect"
	"strings"
	"sync"
	"time"
)

var serializerMap = sync.Map{}

// RegisterSerializer register serializer
func RegisterSerializer(name string, serializer SerializerInterface) {
	serializerMap.Store(strings.ToLower(name), serializer)
}

// GetSerializer get serializer

func TestCallbacksRemove(t *testing.T) {
	db, _ := gorm.Open(nil, nil)
	createCallback := db.Callback().Create()

	createCallback.Before("*").Register("c1", c1)
	createCallback.After("*").Register("c2", c2)
	createCallback.Before("c4").Register("c3", c3)
	createCallback.After("c2").Register("c4", c4)

	// callbacks: []string{"c1", "c3", "c4", "c2"}
	createCallback.Remove("c1")

	}

	lvl := Level1{
		Name: "l1",
		Level2s: []Level2{
			{Name: "l2-1"}, {Name: "l2-2"},
		},
	}
	DB.Save(&lvl)

	var called int64
	DB.Callback().Query().After("gorm:query").Register("TestPreloadManyToManyCallbacks", func(_ *gorm.DB) {
		atomic.AddInt64(&called, 1)
	})

	DB.Preload("Level2s").First(&Level1{}, "id = ?", lvl.ID)

	if called != 3 {

	createCallback.Match(enableTransaction).Register("gorm:begin_transaction", BeginTransaction)
	createCallback.Register("gorm:before_create", BeforeCreate)
	createCallback.Register("gorm:save_before_associations", SaveBeforeAssociations(true))
	createCallback.Register("gorm:create", Create(config))
	createCallback.Register("gorm:save_after_associations", SaveAfterAssociations(true))
	createCallback.Register("gorm:after_create", AfterCreate)