code: public OHLCSeries addSeries(
        String seriesName,
        List<? extends Number> openData,
        List<? extends Number> highData,
        List<? extends Number> lowData,
        List<? extends Number> closeData) {
  
      return addSeries(seriesName, null, openData, highData, lowData, closeData);
    }
docs: Add a series for a OHLC type chart using Lists
  
  @param seriesName
  @param openData the open data
  @param highData the high data
  @param lowData the low data
  @param closeData the close data
  @return A Series object that you can set properties on