public function setPassword(string $passwd) : CNabuDataObject
    {
        if ($passwd === null) {
            throw new ENabuCoreException(
                    ENabuCoreException::ERROR_NULL_VALUE_NOT_ALLOWED_IN,
                    array("\$passwd")
            );
        }
        $this->setValue('nb_user_passwd', $passwd);
        
        return $this;
    }