如何使用动态连接参数使用Symfony Mailer发送邮件？

framework:
    mailer:
        dsn: 'smtp://localhost'
        username: '%env(MAILER_USERNAME)%'
        password: '%env(MAILER_PASSWORD)%'

use Symfony\Component\Mailer\MailerInterface;
use Symfony\Component\Mime\Email;

class MyController
{
    private $mailer;

    public function __construct(MailerInterface $mailer)
    {
        $this->mailer = $mailer;
    }

    public function sendEmail()
    {
        $email = (new Email())
            ->from('sender@example.com')
            ->to('recipient@example.com')
            ->subject('Hello')
            ->text('This is a test email.');

        $this->mailer->send($email);
    }
}

use Symfony\Component\Mailer\MailerInterface;
use Symfony\Component\Mime\Email;

class MyController
{
    private $mailer;
    private $smtpConfig;

    public function __construct(MailerInterface $mailer, array $smtpConfig)
    {
        $this->mailer = $mailer;
        $this->smtpConfig = $smtpConfig;
    }

    public function sendEmail()
    {
        $email = (new Email())
            ->from('sender@example.com')
            ->to('recipient@example.com')
            ->subject('Hello')
            ->text('This is a test email.');

        // 设置动态连接参数
        $email->getHeaders()->addTextHeader('X-SMTP-Host', $this->smtpConfig['host']);
        $email->getHeaders()->addTextHeader('X-SMTP-Port', $this->smtpConfig['port']);
        $email->getHeaders()->addTextHeader('X-SMTP-Username', $this->smtpConfig['username']);
        $email->getHeaders()->addTextHeader('X-SMTP-Password', $this->smtpConfig['password']);

        $this->mailer->send($email);
    }
}