@Override
    public final DynamicConfiguration getDynamicConfiguration(URL url) {
        String key = url == null ? DEFAULT_KEY : url.toServiceString();
        return ConcurrentHashMapUtils.computeIfAbsent(dynamicConfigurations, key, k -> createDynamicConfiguration(url));
    }
@Test
    void testGetDynamicConfiguration() {
        URL url = URL.valueOf("nop://127.0.0.1");
        assertEquals(factory.getDynamicConfiguration(url), factory.getDynamicConfiguration(url));
    }