1 alter function uuid_nil() immutable;
2 alter function uuid_ns_dns() immutable;
3 alter function uuid_ns_oid() immutable;
4 alter function uuid_ns_url() immutable;
5 alter function uuid_ns_x500() immutable;
6 alter function uuid_url(text) immutable;
7 alter function uuid_dns(text) immutable;
8 alter function uuid_oid(text) immutable;
9 alter function uuid_x500(text) immutable;