code: public final void evaluate() {
      final LemmatizerEvaluator evaluator = new LemmatizerEvaluator(this.lemmatizer);
      try {
        evaluator.evaluate(this.testSamples);
      } catch (IOException e) {
        e.printStackTrace();
      }
      System.out.println(evaluator.getWordAccuracy());
    }
docs: Evaluate and print word accuracy.