ItemNormalizer::updateObjectToPopulate should use getItemIriFromResourceClass instead of getIriFromResourceClass

[Inari-Whitebear]

Maybe I'm wrong with this, but
https://github.com/api-platform/core/blob/master/src/Serializer/ItemNormalizer.php#L98
seems to fetch the collection route and stick an identifier on. Shouldn't it instead use getItemIriFromResourceClass ( https://github.com/api-platform/core/blob/master/src/Api/IriConverterInterface.php#L59 ) to fetch the route for the item directly with the identifier?

[dunglas]

Indeed (this code is probably older than the introduction of getItemIriFromResourceClass). Would you mind opening a pull request?

[soyuka]

let's follow this in #3609