@Override
    public SELF decorator(DecoratingHttpServiceFunction decoratingHttpServiceFunction) {
        return decorator(Route.ofCatchAll(), decoratingHttpServiceFunction);
    }
Decorates all {@link HttpService}s with the specified {@link DecoratingHttpServiceFunction}.
The specified decorator(s) is/are executed in reverse order of the insertion.

@param decoratingHttpServiceFunction the {@link DecoratingHttpServiceFunction} that decorates
                                     {@link HttpService}s
core/src/main/java/com/linecorp/armeria/server/AbstractContextPathServicesBuilder.java