@Bean
    public MetaDataHandler tarsMetaDataHandler() {
        return new TarsMetaDataHandler();
    }
@Test
    public void testTarsMetaDataHandler() {
        applicationContextRunner.run(context -> {
                MetaDataHandler handler = context.getBean("tarsMetaDataHandler", MetaDataHandler.class);
                assertNotNull(handler);
            }
        );
    }