@Override
        public void close(CompletionHandler completionHandler) {
            completionHandler.completed();
            responseHandler.handleResponse(new Response(OK)).close(null);
        }
@author Oyvind Bakksjo
@author Simon Thoresen Hult
@author bjorncs
container-core/src/test/java/com/yahoo/jdisc/http/server/jetty/HttpServerTest.java