/**
  * @inheritdoc
  */
 protected function setAttributes(Model $model, array $attributes, Schema $schema, Closure $policy, ErrorCollection $errors)
 {
     if (array_key_exists(User::FIELD_EMAIL, $attributes) === true) {
         $attributes[User::FIELD_EMAIL] = strtolower($attributes[User::FIELD_EMAIL]);
     }
     parent::setAttributes($model, $attributes, $schema, $policy, $errors);
 }