MatthiasMullie\Scrapbook\Psr16\SimpleCache::deleteMultiple PHP Method

    public function deleteMultiple($keys)
    {
        if ($keys instanceof Traversable) {
            $keys = iterator_to_array($keys);
        }
        if (!is_array($keys) || array_filter($keys, 'is_string') !== $keys) {
            throw new InvalidArgumentException('Invalid keys: ' . serialize($keys) . '. Must be array of strings.');
        }
        $success = $this->store->deleteMulti($keys);
        return !in_array(false, $success);
    }