def delete_concept_instance_relationship(
    db: PartitionedDatabase,
    relationship_id_or_name: ModelRelationshipId,  # ununsed
    id_: RecordRelationshipId,
) -> RecordRelationshipId:

    with db.transaction() as tx:
        deleted = db.delete_record_relationships_tx(tx, id_)

    if deleted is None or len(deleted) == 0:
        raise NotFound(f"Could not delete record relationship [{id_}]")
    return deleted[0]
def delete_concept_instance_relationships(
        db: PartitionedDatabase) -> List[JsonDict]:

    # HACK: request bodies on DELETE requests do not have defined
    # semantics and are not directly support by OpenAPI/Connexion. See
    #  - https://swagger.io/docs/specification/describing-request-body
    #  - https://github.com/zalando/connexion/issues/896
    body = connexion.request.json

    # HACK:
    # since we're pulling directly from the raw body, names will not be camel cased:
    relationship_instance_ids: List[str] = body.get("relationshipInstanceIds",
                                                    [])

    with db.transaction() as tx:
        return db.delete_record_relationships_tx(tx,
                                                 *relationship_instance_ids)