code: public double score(List<L> guesses, List<L> trueLabels, Index<L> dataLabelIndex) {
      setLabelIndex(dataLabelIndex);
      return score(guesses, trueLabels);
    }
docs: Returns the score (F1) for the given list of guesses
  @param guesses - Guesses by classifier
  @param trueLabels - Gold labels to compare guesses against
  @param dataLabelIndex - Index of labels
  @return F1 score