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: impl.go
    path of file: ./repos/Yearning/src/model
    
    the code of the file until where you have to start completion: package model

import (
	"crypto/tls"
	"encoding/json"
	"errors"
	"fmt"
	"github.com/cookieY/yee/logger"
	"gopkg.in/ldap.v3"
)

type ALdap struct {
	Ldap
	ldapMap
}

type ldapMap struct {
	RealName   string `json:"real_name"`
	Email      string `jso
    
func (l *ALdap) LdapConnect(user string, pass string, isTest bool) (isOk bool, err error) {
	var ld *ldap.Conn
	if l.Ldaps {
		ld, err = ldap.DialTLS("tcp", l.Url, &tls.Config{InsecureSkipVerify: true})
	} else {
		ld, err = ldap.Dial("tcp", l.Url)
	}

	if err != nil {
		return false, err
	}

	defer ld.Close()

	if ld != nil {
		if err := ld.Bind(l.User, l.Password); err != nil {
			return false, err
		}
	}

	if isTest {
		user = l.TestUser
		pass = l.TestPassword
	}

	searchRequest := ldap.NewSearchRequest(
		l.Sc,
		ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
		fmt.Sprintf(l.Type, user),
		[]string{},
		nil,
	)

	sr, err := ld.Search(searchRequest)

	if err != nil {
		return false, err
	}

	if len(sr.Entries) != 1 {
		return false, errors.New("User does not exist or too many entries returned")
	}

	userdn := sr.Entries[0].DN
	if err := ld.Bind(userdn, pass); err != nil {
		return false, err
	}
	var lmap ldapMap
	if err := json.Unmarshal([]byte(l.Map), &lmap); err != nil {
		logger.DefaultLogger.Error(err)
	} else {
		l.Email = sr.Entries[0].GetAttributeValue(lmap.Email)
		l.Department = sr.Entries[0].GetAttributeValue(lmap.Department)
		l.RealName = sr.Entries[0].GetAttributeValue(lmap.RealName)
	}

	return true, nil
}