code: public INDArray scoreExamples(DataSetIterator iter, boolean addRegularizationTerms) {
          List<INDArray> out = new ArrayList<>();
  
          while (iter.hasNext()) {
              out.add(scoreExamples(iter.next(), addRegularizationTerms));
          }
          return Nd4j.toFlattened('f', out);
      }
docs: As per {@link #scoreExamples(DataSet, boolean)} - the outputs (example scores) for all DataSets in the iterator are concatenated