public static void registerExternalConfigLoader(ExternalConfigLoader configLoader) {
        wLock.lock();
        try {
            CONFIG_LOADERS.add(configLoader);
            CONFIG_LOADERS.sort(Comparator.comparingInt(ExternalConfigLoader::getOrder));
        } finally {
            wLock.unlock();
        }
    }
@Test
    public void registerExternalConfigLoader() throws Exception {
    }