code: public boolean hasLemma(String lemma) {
      boolean found = false;
      for (AnalyzedToken reading : anTokReadings) {
        if (reading.getLemma() != null) {
          found = lemma.equals(reading.getLemma());
          if (found) {
            break;
          }
        }
      }
      return found;
    }
docs: Checks if one of the token's readings has a particular lemma.
  
  @param lemma lemma POS tag to look for