code: @Override
      public void init() throws IOException {
          // make valu creator
          String[] labels = conf.getStrings(SimpleJob.LABELS);
          if (labels == null) {
              valueCreator = new SimpleValueCreator(separator, regex);
          } else {
              boolean formatIgnored = conf.getBoolean(SimpleJob.FORMAT_IGNORED, false);
              valueCreator = new LabelValueCreator(labels, formatIgnored, separator, regex);
          }
      }
docs: {@inheritDoc}