private static Throwable unwrapException(Throwable t) {
        return t instanceof CompletionException || t instanceof ExecutionException ? t.getCause() : t;
    }
Implementation of a Jetty {@link Handler} that dispatches requests to JDisc's {@link com.yahoo.jdisc.handler.RequestHandler}.

@author bjorncs
container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/JdiscDispatchingHandler.java