code: public final List<Morpheme> getMorphemes(final String[] tokens, final String[] posTags) {
      final List<String> lemmas = lemmatize(tokens, posTags);
      final List<Morpheme> morphemes = getMorphemesFromStrings(tokens, posTags, lemmas);
      return morphemes;
    }
docs: Get lemmas from a tokenized and pos tagged sentence.
  
  @param tokens
  the tokenized sentence
  @param posTags the pos tags of the sentence
  @return a list of {@code Morpheme} objects containing morphological info