Isnt this possible with the modifyCategorySources hook?

-> https://github.com/craftcms/docs/blob/v3/en/updating-plugins.md#modifyentrysources-modifycategorysources-modifyassetsources--modifyusersources

I'm assuming you are using C3 by the namespace you mentioned. Correct me if this is wrong :).

Isnt this possible with the modifyCategorySources hook?

-> https://docs.craftcms.com/v3/extend/updating-plugins.html#modifyentrysources-modifycategorysources-modifyassetsources-modifyusersources

I'm assuming you are using C3 by the namespace you mentioned. Correct me if this is wrong :).