/**
  * @since 2.3
  *
  * @param string $poolCacheId
  * @param integer $cacheSize
  *
  * @return Cache
  */
 public function getPoolCacheById($poolCacheId, $cacheSize = 500)
 {
     if (!isset($this->poolCacheList[$poolCacheId])) {
         $this->poolCacheList[$poolCacheId] = $this->cacheFactory->newFixedInMemoryCache($cacheSize);
     }
     return $this->poolCacheList[$poolCacheId];
 }