protected function configure($options = array(), $messages = array())
 {
     parent::configure($options, $messages);
     $this->setMessage('required', isset($messages['required']) ? $messages['required'] : 'Obrigatório.');
     $this->setMessage('invalid', isset($messages['invalid']) ? $messages['invalid'] : 'Preenchimento incorreto.');
 }
 protected function configure($options = array(), $messages = array())
 {
     parent::configure($options, $messages);
 }