public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('title', null, ['attr' => ['class' => 'validate[required]']])->add('titleAbbr', null, ['attr' => ['class' => 'validate[required]']])->add('subtitle', null, ['attr' => ['class' => 'validate[required]']])->add('titleTransliterated');
}