Hydrating RelationshipEntity objects #180

Maybe I am not seeing something, but if I have a query like this one:

MATCH (store:Store)-[stock:STOCK]->(product:Product)
WHERE id(store) = {storeID} AND id(product) = {productID}
RETURN store, product, stock

... and I do something like this:

$query = $this->repo->createQuery($cypher)
            ->setParameter('productID', $productID)
            ->setParameter('storeID', $storeID)
            ->addEntityMapping('store', Store::class)
            ->addEntityMapping('product', Product::class)
            ->addEntityMapping('stock', Stock::class);

... then my app totally crashes. It does not support hydrating the stock relation into this Stock class, annotated with @OGM\RelationshipEntity(type="STOCK").

Am I missing some important concept, or is it just that no-one has ran into this before?

To get to my Stock-object, I can of course also use my defined relation (with @OGM\Relationship()):

$result = $query->getOneResult();
$result['store']->stock;

... but that one gives my Collection of all the Store's products! So I would still need to loop over all of those to see what Stock-object in that Collection is the one that points to the right Product. I just want the Stock object from the query.

I think it would be really great if I can hydrate the relation model via the same way I can hydrate the node model.