archaius-core/src/main/java/com/netflix/config/ConfigurationWithPollingSource.java
@Override
    public Integer getInteger(String key, Integer defaultValue) {
        return config.getInteger(key, defaultValue);
    }
@Override
    public Integer getInteger(String key, Integer defaultValue) {
        return config.getInteger(key, defaultValue);
    }
Delegates to the underlying configuration.