public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        final FeedConfig feedConfig = new FeedConfig.Builder(context, "YOUR_FEED_UNIT_ID")
          .feedHeaderViewAdapterClass(DefaultFeedHeaderViewAdapter.class)
          .build();
        final BuzzAdBenefitConfig buzzAdBenefitConfig = new BuzzAdBenefitConfig.Builder(context)
            .setFeedConfig(feedConfig)
            .build();
        BuzzAdBenefit.init(this, buzzAdBenefitConfig);
        ...(생략)...
    }
}