public Iterable<LogValue> getLogValues() {
        return Collections::emptyIterator;
    }
Complete creation of this response.
This is called by the container once just before writing the response header back to the caller,
so this is the last moment at which status and headers can be determined.
This default implementation does nothing.
container-core/src/main/java/com/yahoo/container/jdisc/HttpResponse.java