docs: @Override
    public MtasDataCollector<?, ?> add(String key, long[] values, int number)
        throws IOException {
      if (key != null) {
        Double[] newValues = new Double[number];
        for (int i = 0; i < values.length; i++)
          newValues[i] = Long.valueOf(values[i]).doubleValue();
        MtasDataCollector<?, ?> subCollector = add(key, false);
        setValue(newCurrentPosition, newValues, number, newCurrentExisting);
        return subCollector;
      } else {
        return null;
      }
    }