assertThat(clazz, nullValue());
assertThat(TestUtils.readField("serviceRef", fb), instanceOf(TestService.class));
assertThat(TestUtils.readField("messageChannel", fb), instanceOf(DirectChannel.class));
assertThat(TestUtils.readField("appmasterService", fb), instanceOf(TestService.class));
TestService service = (TestService) ctx.getBean("yarnAmservice3");
assertNotNull(service);
assertThat(TestUtils.readField("messageChannel", service), instanceOf(DirectChannel.class));
testSocketSupport(service, fb);
}