private List<Node> enumerateNodesNotYetAckedAtLeastVersion(long version) {
        var bundle = systemStateBroadcaster.getClusterStateBundle();
        if (bundle == null) {
            return List.of();
        }
        return cluster.getNodeInfos().stream().
                      filter(n -> effectiveActivatedStateVersion(n, bundle) < version).
                      map(NodeInfo::getNode).
                      toList();
    }
This is called when the options field has been set to a new set of options
clustercontroller-core/src/main/java/com/yahoo/vespa/clustercontroller/core/FleetController.java