@BeforeEach
    public void subscribe() {
        ChainsConfig.Builder chainsBuilder = new ChainsConfig.Builder();
        chainsBuilder = (ChainsConfig.Builder)root.getConfig(chainsBuilder, "searchchains");
        chainsConfig = new ChainsConfig(chainsBuilder);

        ClusterConfig.Builder clusterBuilder = new ClusterConfig.Builder();
        clusterBuilder = (ClusterConfig.Builder)root.getConfig(clusterBuilder, "searchchains/chain/cluster2/component/" + ClusterSearcher.class.getName());
        clusterConfig = new ClusterConfig(clusterBuilder);
    }
Test of search chains config
<p>TODO: examine the actual values in the configs.</p>

@author Tony Vaagenes
config-model/src/test/java/com/yahoo/vespa/model/container/search/searchchain/SchemaChainsTest.java