Addon services should be exposed through @Produces methods

import javax.enterprise.inject.Produces;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;

public class RestClientProducer
{

   @Produces
   public ClientBuilder createClientBuilder()
   {
      ClientBuilder builder = ClientBuilder.newBuilder();
      return builder;
   }

   @Produces
   public Client createClient(ClientBuilder builder)
   {
      return builder.build();
   }
}