code: public static <T> ServiceDiscoveryBuilder<T> builder(Class<T> payloadClass)
      {
          return new ServiceDiscoveryBuilder<T>(payloadClass);
      }
docs: Return a new builder.
  
  @param payloadClass the class of the payload of your getGroup instance (you can use {@link Void}
  if your instances don't need a payload)
  @return new builder