code: private static void addPartyData(final DataSeries dataSeries, final SimpleDateFormat simpleDateFormat,
  			final List<ViewRiksdagenVoteDataBallotPartySummaryDaily> list, final Function<ViewRiksdagenVoteDataBallotPartySummaryDaily, Object> t) {
  		dataSeries.newSeries();
  		for (final ViewRiksdagenVoteDataBallotPartySummaryDaily viewRiksdagenVoteDataBallotPartySummaryDaily : list) {
  			if (viewRiksdagenVoteDataBallotPartySummaryDaily != null) {
  				dataSeries.add(
  						simpleDateFormat
  								.format(viewRiksdagenVoteDataBallotPartySummaryDaily.getEmbeddedId().getVoteDate()),
  						t.apply(viewRiksdagenVoteDataBallotPartySummaryDaily));
  			}
  		}
  	}
docs: Adds the party data.
  
  @param dataSeries       the data series
  @param simpleDateFormat the simple date format
  @param list             the list
  @param t                the t