abstract HttpTracing httpTracing(ApplicationContext ctx);
@Test void WebMvc25_httpTracing_whenDoesntExist() {
    ApplicationContext context = mock(ApplicationContext.class);
    when(context.containsBean("httpTracing")).thenReturn(false);

    assertThatThrownBy(() -> new WebMvc25().httpTracing(context))
      .isInstanceOf(NoSuchBeanDefinitionException.class);
  }