code: protected void printError(final Span references[], final Span predictions[],
        final T referenceSample, final T predictedSample, final String sentence) {
      final List<Span> falseNegatives = new ArrayList<Span>();
      final List<Span> falsePositives = new ArrayList<Span>();
  
      findErrors(references, predictions, falseNegatives, falsePositives);
  
      if (falsePositives.size() + falseNegatives.size() > 0) {
  
        printSamples(referenceSample, predictedSample);
  
        printErrors(falsePositives, falseNegatives, sentence);
  
      }
    }
docs: for the sentence detector