private void release(Request request) {
        if (request==null) return;
       ((com.yahoo.container.jdisc.HttpRequest)request.properties().get("jdisc.request")).getJDiscRequest().release();
    }
Creates a request which has an underlying jdisc request, which is needed to make the outgoing request
container-core/src/test/java/com/yahoo/processing/processors/MockUserDatabaseClientTest.java