public static void copyHeaders(Request jettyRequest, HttpRequest jdiscRequest) {
        jettyRequest.getHeaders()
                .forEach(header -> {
                    if (!header.getValue().isBlank())
                        jdiscRequest.headers().add(header.getName(), header.getValue());
                });
    }
@author Simon Thoresen Hult
@author bjorncs
container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/HttpRequestFactory.java