public final class IndyGDG {
   private final Devs devs;
   private final Location location;
   private final Speaker speaker;
   public IndyGDG() {
       this.devs = new AndroidEnthusiasts();
       this.location = new DeveloperTown();
       this.speaker = new AlexWegener();
   }
   public void meetup() {
       location.host();
       do {
           speaker.present();
       } while (devs.areEatingPizza());
   }
}