class AbstractDynamicConfiguration implements DynamicConfiguration {

    @Override
    public void addListener(String key, String group, ConfigurationListener listener) {
    }

    public  AbstractDynamicConfiguration(URL url);
    public  AbstractDynamicConfiguration(String threadPoolPrefixName,
                                        int threadPoolSize,
                                        long keepAliveTime,
                                        String group,
                                        long timeout);

}