protected function writeSessionMetaDataCacheEntry()
{
$sessionInfo = ['lastActivityTimestamp' => $this->lastActivityTimestamp, 'storageIdentifier' => $this->storageIdentifier, 'tags' => $this->tags];
$tagsForCacheEntry = array_map(function ($tag) {
return Session::TAG_PREFIX . $tag;
}, $this->tags);
$tagsForCacheEntry[] = $this->sessionIdentifier;
$tagsForCacheEntry[] = 'session';
$this->metaDataCache->set($this->sessionIdentifier, $sessionInfo, $tagsForCacheEntry, 0);
}