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