code: public static LinkedBindingBuilder<ServiceInformation> bindNewAnnouncement(final Binder binder)
      {
          return Multibinder.newSetBinder(binder, ServiceInformation.class).addBinding();
      }
docs: Register a new Announcement with service discovery. This will only work with the read/write Discovery client and
  it requires binding the ServiceAnnouncer as an eager singleton.
  @return the binding builder you should register with