public void shutdownConfigRetriever() {
        retriever.shutdown();
    }
@Test
    void components_can_be_created_from_config() {
        writeBootstrapConfigs();
        dirConfigSource.writeConfig("test", "stringVal \"myString\"");

        Container container = newContainer(dirConfigSource);

        ComponentTakingConfig component = createComponentTakingConfig(getNewComponentGraph(container));
        assertEquals("myString", component.config.stringVal());

        container.shutdownConfigRetriever();
    }