Cache\Adapter\Common\AbstractCachePool::getItem PHP Method

    public function getItem($key)
    {
        $this->validateKey($key);
        if (isset($this->deferred[$key])) {
            $item = $this->deferred[$key];
            return is_object($item) ? clone $item : $item;
        }
        $func = function () use($key) {
            try {
                return $this->fetchObjectFromCache($key);
            } catch (\Exception $e) {
                $this->handleException($e, __FUNCTION__);
            }
        };
        return new CacheItem($key, $func);
    }