public function getCreatedAt()
 {
     $this->_load();
     return parent::getCreatedAt();
 }
 private static function insert(User $model)
 {
     $db = Database::getInstance('app');
     $query = "INSERT INTO user (username,password,registerDate,emailVerified,email,createdAt,updatedAt) VALUES (:username, :password, :registerDate, :emailVerified, :email, :createdAt, :updatedAt);";
     $result = $db->prepare($query);
     $result->execute([':username' => $model->getUsername(), ':password' => $model->getPassword(), ':registerDate' => $model->getRegisterDate(), ':emailVerified' => $model->getEmailVerified(), ':email' => $model->getEmail(), ':createdAt' => $model->getCreatedAt(), ':updatedAt' => $model->getUpdatedAt()]);
     $model->setId($db->lastId());
 }