code: @Override protected Keyed readAll_impl(AutoBuffer ab, Futures fs) {
      //Metalearner
      ab.getKey(_output._metalearner._key,fs);
      //Base Models
      for (Key<Model> ks : _parms._base_models)
        ab.getKey(ks,fs);
      return super.readAll_impl(ab,fs);
    }
docs: Read in models (base + metalearner)