Neos\Cache\Backend\FileBackend::collectGarbage PHP Метод

    public function collectGarbage()
    {
        if ($this->frozen === true) {
            return;
        }
        for ($directoryIterator = new \DirectoryIterator($this->cacheDirectory); $directoryIterator->valid(); $directoryIterator->next()) {
            if ($directoryIterator->isDot()) {
                continue;
            }
            if ($this->isCacheFileExpired($directoryIterator->getPathname())) {
                $this->remove($directoryIterator->getBasename($this->cacheEntryFileExtension));
            }
        }
    }