@Test
    void require_that_bootstrap_configs_come_first() {
        writeConfigs();
        ConfigRetriever retriever = createConfigRetriever();
        ConfigSnapshot bootstrapConfigs = retriever.getConfigs(Set.of(), 0, true);

        assertTrue(bootstrapConfigs instanceof BootstrapConfigs);
        retriever.shutdown();
    }
@author gjoranv
@author Tony Vaagenes
@author ollivir
container-core/src/test/java/com/yahoo/container/di/ConfigRetrieverTest.java