protected function createActivationForm(): FormInterface
    {
        return $this->createFormBuilder(null, ['translation_domain' => 'ngsite_user'])
            ->add(
                'email',
                EmailType::class,
                [
                    'constraints' => [
                        new Constraints\Email(),
                        new Constraints\NotBlank(),
                    ],
                ]
            )->getForm();
    }