public function removeAttachmentJoins()
    {
        $joinProto = $this->modelFactory()->get(Join::class);

        $loader = $this->collectionLoader();
        $loader
            ->setModel($joinProto)
            ->addFilter('object_type', $this->objType())
            ->addFilter('object_id', $this->id());

        $collection = $loader->load();

        foreach ($collection as $obj) {
            $obj->delete();
        }

        return true;
    }