code: private static void addDocumentHistoryByOrgData(final DataSeries dataSeries, final Series series,
  			final List<ViewRiksdagenOrgDocumentDailySummary> itemList) {
  		final Map<String, List<ViewRiksdagenOrgDocumentDailySummary>> map = itemList.parallelStream()
  				.filter(Objects::nonNull)
  				.collect(Collectors.groupingBy(t -> StringUtils.defaultIfBlank(t.getDocumentType(), NO_INFO)));
  		final SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DD_MMM_YYYY, Locale.ENGLISH);
  		final SimpleDateFormat parseIncomingDateFormat = new SimpleDateFormat("yyyy-MM-dd",Locale.ENGLISH);
  
  		for (final Entry<String, List<ViewRiksdagenOrgDocumentDailySummary>> entry : map.entrySet()) {
  			addNewDataSerie(dataSeries, series, simpleDateFormat, parseIncomingDateFormat, entry);
  		}
  	}
docs: Adds the document history by org data.
  
  @param dataSeries
  the data series
  @param series
  the series
  @param itemList
  the item list