doGetStats() 추상적인 보호된 메소드

Retrieves cached information from the data store.
부터: 2.2
abstract protected doGetStats ( ) : array | null
리턴 array | null An associative array with server's statistics if available, NULL otherwise.
 /**
  * @inheritdoc
  */
 protected function doGetStats()
 {
     return $this->cacheProvider->doGetStats();
 }