class Main {

    public static void main(String[] args) throws IOException, InterruptedException {<FILL_FUNCTION_BODY>}
}


        SampleMultiCollector xmc = new SampleMultiCollector();
        PrometheusRegistry.defaultRegistry.register(xmc);
        HTTPServer server = HTTPServer.builder()
                .port(9401)
                .buildAndStart();

        System.out.println("HTTPServer listening on port http://localhost:" + server.getPort() + "/metrics");
    
<no_super_class>