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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _traverse_relationship_objs(self, rel2src2dsts, goobj_child, goids_seen):
 """Traverse from source GO up relationships."""

        child_id = goobj_child.id
        goids_seen.add(child_id)
        ##A self.go2obj[child_id] = goobj_child
        # Update goids_seen and go2obj with child alt_ids
        for goid_altid in goobj_child.alt_ids:
            goids_seen.add(goid_altid)
            ##A self.go2obj[goid_altid] = goobj_child
        # Loop through relationships of child object
        for reltype, recs in goobj_child.relationship.items():
            if reltype in self.relationships:
                for relationship_obj in recs:
                    relationship_id = relationship_obj.id
                    rel2src2dsts[reltype][relationship_id].add(child_id)
                    # If relationship has not been seen, traverse
                    if relationship_id not in goids_seen:
                        self._traverse_relationship_objs(rel2src2dsts, relationship_obj, goids_seen)