@Test void delegatesAutocompleteTags() {
    AutocompleteTags autocompleteTags = mock(AutocompleteTags.class);
    when(delegate.autocompleteTags()).thenReturn(autocompleteTags);

    assertThat(forwarder.autocompleteTags()).isEqualTo(autocompleteTags);

    verify(delegate).autocompleteTags();
  }
This test is intentionally brittle. It should break if we add new methods on {@link
StorageComponent}!
zipkin/src/test/java/zipkin2/storage/ForwardingStorageComponentTest.java