public static ClusterMembership from(String stringValue, Version vespaVersion, Optional<DockerImage> dockerImageRepo) {
        return from(stringValue, vespaVersion, dockerImageRepo, ZoneEndpoint.defaultEndpoint);
    }
@Test
    void testServiceInstanceWithGroupAndRetireFromString() {
        assertContentServiceWithGroupAndRetire(ClusterMembership.from("content/id1/4/37/retired/stateful", Vtag.currentVersion, Optional.empty()));
    }