Symfony formbuilder:验证电子邮件域？

use Symfony\Component\Form\Extension\Core\Type\EmailType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class YourFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('email', EmailType::class, [
                'label' => 'Email',
                'required' => true,
                'constraints' => [
                    new \Symfony\Component\Validator\Constraints\Email([
                        'message' => 'Invalid email address.',
                    ]),
                ],
            ]);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => YourFormDataClass::class,
        ]);
    }
}