我正在嘗試使用 go 通道同時生成帳戶（下面是簡化的代碼），但是我看到它并沒有生成所有帳戶：package mainimport (    "fmt"    "github.com/segmentio/ksuid")const ConcurrencyLevel = 10const TotalAccounts = 30type (    Accounts []Account     Account struct {        AccountID   string    })func GenerateRandomAccountID() (accountReferenceID string){    return ksuid.New().String()}func main() {    totalAccounts := make(Accounts, 0, TotalAccounts)    total := 0    for total < TotalAccounts {        accounts := make([]Account, ConcurrencyLevel)        ch := make(chan Account)        for range accounts {            go func() {                accountID := GenerateRandomAccountID()                account := Account{AccountID: accountID}                ch <- account            }()        }        for k, _ := range accounts {            account := <-ch            accounts[k] = account        }        totalAccounts = append(totalAccounts, accounts...)        total += len(totalAccounts)        close(ch)    }    fmt.Printf("total is : %d\n", total)    fmt.Printf("total accounts generated is : %d\n", len(totalAccounts))}它打印出來total is : 30total accounts generated is : 20在這種情況下，預計生成的帳戶總數為 30。https://go.dev/play/p/UtFhE2nidaP