code: public static char[] getLabelsArray(Set dataSet) {
          switch (dataSet) {
              case COMPLETE:
                  return LABELS_COMPLETE;
              case MERGE:
                  return LABELS_MERGE;
              case BALANCED:
                  return LABELS_BALANCED;
              case LETTERS:
                  return LABELS_LETTERS;
              case DIGITS:
              case MNIST:
                  return LABELS_DIGITS;
              default:
                  throw new UnsupportedOperationException("Unknown Set: " + dataSet);
          }
      }
docs: Get the label assignments for the given set as a character array.
  
  @param dataSet DataSet to get the label assignment for
  @return Label assignment and given dataset