I try to access stock data for a product, using

```
$product->getExtensionAttributes()->getStockItem()->getIsInStock()

```

and receive the following error on this line

> 
> PHP Fatal error: Call to a member function getIsInStock() on null.
> 
> 
> 

Obviously the `stock_item` extension attribute was not loaded. `$product` comes from the product repository and has been loaded with `$productRepository->getList()`.

How can I get products **with stock information** from the product repository?