public function create(FormInterface $form, Request $request)
 {
     $form->handleRequest($request);
     if (!$form->isValid()) {
         return false;
     }
     $entity = $form->getData();
     if ($form->isSubmitted()) {
         if (!is_null($this->manager->checkUniqueEmail($entity->getUser()->getEmail()))) {
             $form->addError(new FormError('Email ja cadastrado!'));
             return false;
         }
     }
     $this->manager->create($entity);
     return true;
 }