如何使用golang查询检索LDAP条目的所有属性？

import (
    "fmt"
    "log"

    ldap "gopkg.in/ldap.v3"
)

conn, err := ldap.Dial("tcp", "ldap.example.com:389")
if err != nil {
    log.Fatal(err)
}
defer conn.Close()

err = conn.Bind("cn=admin,dc=example,dc=com", "password")
if err != nil {
    log.Fatal(err)
}

searchRequest := ldap.NewSearchRequest(
    "dc=example,dc=com",
    ldap.ScopeWholeSubtree, ldap.NeverDerefAliases, 0, 0, false,
    "(objectClass=*)",
    []string{"*"},
    nil,
)

sr, err := conn.Search(searchRequest)
if err != nil {
    log.Fatal(err)
}

for _, entry := range sr.Entries {
    fmt.Println("DN:", entry.DN)
    for _, attr := range entry.Attributes {
        fmt.Printf("%s: %v\n", attr.Name, attr.Values)
    }
}

go get gopkg.in/ldap.v3