/**
* {@inheritdoc}
*/
protected function invalidateTagsOnSave($update)
{
parent::invalidateTagsOnSave($update);
// The parent doesn't invalidate the entity cache tags on save because the
// config system will invalidate them, but since we're using the parent
// page's cache tags, we need to invalidate them special.
Cache::invalidateTags($this->getCacheTagsToInvalidate());
}
