private abstract class SubInner extends BaseInner {}
    }
  }

  // For Guava bug https://github.com/google/guava/issues/1025
  public void testDespiteGenericSignatureFormatError() {
    ImmutableSet<?> unused =
        ImmutableSet.copyOf(
            TypeToken.of(ToReproduceGenericSignatureFormatError.SubOuter.SubInner.class)
                .getTypes()