.addMapping("/myservlet"));
DeploymentManager manager = defaultContainer().addDeployment(servletBuilder);
manager.deploy();
HttpHandler servletHandler = manager.start();
PathHandler path = Handlers.path(Handlers.redirect(MYAPP))
.addPrefixPath(MYAPP, servletHandler);
Undertow server = Undertow.builder()
.addListener(8080, "localhost")
.setHandler(path)