REST API fetch Lots/Serials/Complementary attribute

Hello dear Dolibarr users,
I use Doli’s REST API to fetch data from the database into google sheets.
So far I was lucky having basic data returned via API but now I need to get unique attributes which are defined as a new attribute (complementary attributes) in a Lots/Serials module. This attribute is unique (IP Address) and it has to match serial numbers (1:1). → see img below


Is there any way to adjust API to work with Lots/Serials module, or to simply include complementary attribute in a response?
I use Dolibarr REST API Explorer to test requests/responses.
Dolibarr version: 13.0.2
Thanks in advance!

If you use Swagger, can you see the attributes for example with get product?

Same thing with Swagger and Postman.
I assume that module “Lots/Serials” or their attributes are not defined in the API at all.