Doctrine\Common\Cache\CacheProvider::getNamespaceVersion PHP Метод

    private function getNamespaceVersion()
    {
        if (null !== $this->namespaceVersion) {
            return $this->namespaceVersion;
        }
        $namespaceCacheKey = $this->getNamespaceCacheKey();
        $this->namespaceVersion = $this->doFetch($namespaceCacheKey) ?: 1;
        return $this->namespaceVersion;
    }