public function getProviderManager(string $vendor_key, string $module_key)
    {
        if ($this->nb_provider_factory instanceof CNabuProviderFactory) {
            return $this->nb_provider_factory->getManager($vendor_key, $module_key);
        } else {
            throw new ENabuProviderException(ENabuProviderException::ERROR_PROVIDER_FACTORY_NOT_AVAILABLE);
        }
    }