code: public <T extends Evaluation> T evaluate(MultiDataSetIterator iterator, List<String> labelsList) {
          return evaluate(iterator, labelsList, 1);
      }
docs: Evaluate the network on the provided data set (single output ComputationGraphs only). Used for evaluating
  the performance of classifiers
  
  @param iterator Data to undertake evaluation on
  @return Evaluation object, summarizing the results of the evaluation on the provided DataSetIterator