/**
  * @param UserAddForm $form
  */
 public function formSubmitted(UserAddForm $form)
 {
     try {
         $this->userManager->create($form->getValues());
         $form->presenter->flashMessage('User was created', 'success');
     } catch (\Nette\InvalidArgumentException $ex) {
         $form->addError($ex->getMessage());
     }
 }