public function getActiveSessions()
{
$activeSessions = [];
foreach ($this->metaDataCache->getByTag('session') as $sessionIdentifier => $sessionInfo) {
$session = new Session($sessionIdentifier, $sessionInfo['storageIdentifier'], $sessionInfo['lastActivityTimestamp'], $sessionInfo['tags']);
$activeSessions[] = $session;
}
return $activeSessions;
}