}
    }

    /**
     * Handle node unavailable events
     */
    private void handleNodeUnavailable(WitnessNotification notification) {
        log.warn("Node unavailable: {}", notification.getResourceName());
        // Could trigger failover logic here
    }

    /**
     * Handle node available events
     */

			{"http.cors.enabled":"true",
			 "http.cors.allow-origin":"*",
			 "discovery.type":"single-node",
			 "cluster.allocator.existing_shards_allocator.batch_enabled":"true",
			 <!--
			 "node.name":"search_engine",
			 "discovery.seed_hosts":"search_engine",
			 "cluster.initial_cluster_manager_nodes":"search_engine",
			 "node.roles":"cluster_manager,data,ingest,ml",
			 -->
			 "indices.breaker.total.limit":"100%",

        assertNotNull(addrEntry[0], "NbtAddress should be created when address is non-zero");
        byte[] nodeAddress = addrEntry[0].getAddress();
        assertNotNull(nodeAddress, "Node address should not be null");
        // Note: Cannot test isGroupAddress() and getNodeType() without CIFSContext in unit test
        // These methods require network operations and are integration test material
    }

        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        })
                .build(newConfigs().clusterName("ArraySettingsTest")
                        .numOfNode(1)
                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));

            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        }).build(newConfigs().clusterName(clusterName).numOfNode(1));

        // wait for yellow status
        runner.ensureYellow();

        System.setProperty(FesenClient.HTTP_ADDRESS, "localhost:" + runner.node().settings().get("http.port", "9201"));

        super.setUp();
    }

    @Override

                log.info("Failed to send node status request for " + addr, ioe);
                throw new UnknownHostException(addr.toString());
            }
            if (response.received && response.resultCode == 0) {

                /*
                 * For name queries resolved by different sources (e.g. WINS,
                 * BCAST, Node Status) we need to augment the hashcode generated

        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        })
                .build(newConfigs().clusterName("ArraySettingsTest")
                        .numOfNode(1)
                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));

        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        })
                .build(newConfigs().clusterName("ArraySettingsTest")
                        .numOfNode(1)
                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));

            bb.putShort((short) 1); // version
            bb.putShort((short) 20); // size
            bb.putShort((short) 2); // serverType
            bb.putShort((short) 3); // rflags
            // v1 node string follows
            bb.put("\\server1\0".getBytes(StandardCharsets.UTF_16LE));

            // Position for second referral
            bb.position(28); // 8 header + 20 first referral

        runner = new OpenSearchRunner();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");
        })
                .build(newConfigs().clusterName("AnalyzerNormalizerTest")
                        .numOfNode(1)
                        .pluginTypes("org.codelibs.opensearch.extension.ExtensionPlugin"));