static Function<? super HttpService, SimpleDecoratingHttpService> newDecorator(
            Iterable<TransientServiceOption> transientServiceOptions) {
        requireNonNull(transientServiceOptions, "transientServiceOptions");
        return delegate -> new WrappingTransientHttpService(delegate,
                                                            Sets.immutableEnumSet(transientServiceOptions));
    }
Returns a new {@link HttpService} decorator which makes the specified {@link HttpService} as
{@link TransientService}.
core/src/main/java/com/linecorp/armeria/server/TransientHttpService.java