code: @Override public DeepLearningModel createImpl() {
      DeepLearningModel.DeepLearningParameters parms = parameters.createImpl();
      return new DeepLearningModel(Key.make() /*dest*/, parms, new DeepLearningModel.DeepLearningModelOutput(null), null, null, 0);
    }
docs: Version&Schema-specific filling into the impl