@Override
        public OperationStats stats() {
            return delegate.stats();
        }
Oof, this is an attempt to see if there's a terminal bug in the Jetty client library that sometimes
renders a client instance permanently unusable. If this is the case, replacing the client altogether
should allow the feeder to start working again, when it wouldn't otherwise be able to.
vespa-feed-client/src/main/java/ai/vespa/feed/client/impl/HttpRequestStrategy.java