Get id2obj containing: id_srcs and parents.

def _get_id2obj_high(self, id2obj_user, id_sources, fnc_fill):
        """Get id2obj containing: id_srcs and parents."""
        for idid_user in id_sources:
            idobj_user = self.id2obj_all[idid_user]
            fnc_fill(id2obj_user, idobj_user)
            id2obj_user[idobj_user.item_id] = idobj_user
            if idid_user != idobj_user.item_id:
                id2obj_user[idid_user] = idobj_user