private static void generateDefaultSearchChains(ContainerCluster<?> cluster) {
        ContainerSearch search = cluster.getSearch();
        if (search != null)
            search.initializeSearchChains(Map.of());
    }
Utility functions for testing the ContainerModelBuilder. Note that XML validation will
not be done when using this class

@author gjoranv
config-model/src/test/java/com/yahoo/vespa/model/container/xml/ContainerModelBuilderTestBase.java