public static VerificationMode never() {
        return times(0);
    }
@Test
    public void should_monitor_server_behavior() throws Exception {
        final MocoMonitor monitor = mock(MocoMonitor.class);
        final HttpServer server = httpServer(port(), monitor);
        server.get(by(uri("/foo"))).response("bar");

        running(server, () -> assertThat(helper.get(remoteUrl("/foo")), is("bar")));

        verify(monitor).onMessageArrived(any(HttpRequest.class));
        verify(monitor).onMessageLeave(any(HttpResponse.class));
        verify(monitor, Mockito.never()).onException(any(Exception.class));
    }