Constructs a new CachedStorage controller.
Drupal\Core\Config\StorageInterface $storage: A configuration storage controller to be cached.
Drupal\Core\Cache\CacheBackendInterface $cache: A cache backend instance to use for caching.
public function __construct(StorageInterface $storage, CacheBackendInterface $cache) {
$this->storage = $storage;
$this->cache = $cache;
}