/**
* {@inheritdoc}
*/
public function test($identifier)
{
return $this->_frontend->test($identifier);
}
/**
* Check whether notification is exists in cache
*
* @param string $notificationType
* @param string $customerId
* @return bool
*/
public function isExists($notificationType, $customerId)
{
return $this->cache->test($this->getCacheKey($notificationType, $customerId));
}
