public function validate(FormEvent $event)
 {
     parent::validate($event);
     $form = $event->getForm();
     if ($form->has('email')) {
         $email = $form->get('email')->getData();
         if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
             $form->get('email')->addError(new FormError("Invalid email address."));
         }
     }
 }
 public function buildForm(FormBuilderInterface $builder, array $options)
 {
     parent::buildForm($builder, $options);
     $builder->remove('first_name')->remove('middle_name')->remove('last_name')->remove('birth_date')->remove('phone_number')->remove('citizenship')->remove('marital_status')->remove('spouse')->remove('annual_income')->remove('estimated_income_tax')->remove('liquid_net_worth')->remove('employment_type');
 }