@Test
    void ensureSearchChainsExists() {
        for (String id : List.of("provider:1", "source:1@provider:1", "default")) {
            assertNotNull(getSearchChain(id), "Missing search chain " + id);
        }
    }
Test of Search chains builder.

@author Tony Vaagenes
config-model/src/test/java/com/yahoo/vespa/model/builder/xml/dom/chains/search/DomSchemaChainsBuilderTest.java