doFetch() 추상적인 보호된 메소드

Fetches an entry from the cache.
abstract protected doFetch ( string $id ) : mixed | false
$id string The id of the cache entry to fetch.
리턴 mixed | false The cached data or FALSE, if no cache entry exists for the given id.
 /**
  * @inheritdoc
  */
 protected function doFetch($id)
 {
     return $this->cacheProvider->doFetch($id);
 }