class SharedTempStoreFactory

class SharedTempStoreFactory extends CoreSharedTempStoreFactory {
    
    /**
     * Creates a SharedTempStore for the current user or anonymous session.
     *
     * @param string $collection
     *   The collection name to use for this key/value store. This is typically
     *   a shared namespace or module name, e.g. 'views', 'entity', etc.
     * @param mixed $owner
     *   (optional) The owner of this SharedTempStore. By default, the
     *   SharedTempStore is owned by the currently authenticated user, or by the
     *   active anonymous session if no user is logged in.
     *
     * @return \Drupal\user\SharedTempStore
     *   An instance of the key/value store.
     */
    public function get($collection, $owner = NULL) {
        // Use the currently authenticated user ID or the active user ID unless
        // the owner is overridden.
        if (!isset($owner)) {
            $owner = \Drupal::currentUser()->id() ?: session_id();
        }
        // Store the data for this collection in the database.
        $storage = $this->storageFactory
            ->get("user.shared_tempstore.{$collection}");
        return new SharedTempStore($storage, $this->lockBackend, $owner, $this->requestStack, $this->expire);
    }

}