public function addToRelationship(StoreInterface $store, UpdateRelationship $request)
    {
        $result = $this->transaction(function () use ($store, $request) {
            return $this->doAddToRelationship($store, $request);
        });

        if ($this->isResponse($result)) {
            return $result;
        }

        return $this->reply()->noContent();
    }