private void addClusterStateVersion(ClusterStateBundle state, NodeInfo nodeInfo, HtmlTable.Row row) {
            String cellContent = (nodeInfo.getClusterStateVersionActivationAcked() == state.getVersion() || !state.deferredActivation())
                    ? String.format("%d", nodeInfo.getClusterStateVersionBundleAcknowledged())
                    : String.format("%d (%d)", nodeInfo.getClusterStateVersionBundleAcknowledged(),
                                               nodeInfo.getClusterStateVersionActivationAcked());
            row.addCell(new HtmlTable.Cell(cellContent));
            if (nodeInfo.getClusterStateVersionBundleAcknowledged() < state.getVersion() - 2) {
                row.getLastCell().addProperties(ERROR_PROPERTY);
            } else if (nodeInfo.getClusterStateVersionBundleAcknowledged() < state.getVersion()) {
                row.getLastCell().addProperties(WARNING_PROPERTY);
            }
        }
Renders web page with cluster status.
clustercontroller-core/src/main/java/com/yahoo/vespa/clustercontroller/core/status/statuspage/VdsClusterHtmlRenderer.java