private <S> void printSamples(final S referenceSample,
      final S predictedSample) {
    final String details = "Expected: {\n" + referenceSample
        + "}\nPredicted: {\n" + predictedSample + "}";
    this.printStream.println(details);
  }
private < S > void printSamples ( final S referenceSample , final S predictedSample ) { final String details = "Expected: {\n" + referenceSample + "}\nPredicted: {\n" + predictedSample + "}" ; this . printStream . println ( details ) ; }
Auxiliary method to print expected and predicted samples.

@param referenceSample
the reference sample
@param predictedSample
the predicted sample