### Question:
TimeSeries extends Series implements Cloneable, Serializable { public void add(TimeSeriesDataItem item) { add(item, true); } TimeSeries(Comparable name);  TimeSeries(Comparable name, String domain, String range); String getDomainDescription(); void setDomainDescription(String description); String getRangeDescription(); void setRangeDescription(String description); @Override int getItemCount(); List<TimeSeriesDataItem> getItems(); int getMaximumItemCount(); void setMaximumItemCount(int maximum); long getMaximumItemAge(); void setMaximumItemAge(long periods); Range findValueRange(); Range findValueRange(Range xRange, TimeZone timeZone); Range findValueRange(Range xRange, TimePeriodAnchor xAnchor, 
            TimeZone zone); double getMinY(); double getMaxY(); Class getTimePeriodClass(); TimeSeriesDataItem getDataItem(int index); TimeSeriesDataItem getDataItem(RegularTimePeriod period); RegularTimePeriod getTimePeriod(int index); RegularTimePeriod getNextTimePeriod(); Collection<RegularTimePeriod> getTimePeriods(); Collection<RegularTimePeriod> getTimePeriodsUniqueToOtherSeries(
            TimeSeries series); int getIndex(RegularTimePeriod period); Number getValue(int index); Number getValue(RegularTimePeriod period); void add(TimeSeriesDataItem item); void add(TimeSeriesDataItem item, boolean notify); void add(RegularTimePeriod period, double value); void add(RegularTimePeriod period, double value, boolean notify); void add(RegularTimePeriod period, Number value); void add(RegularTimePeriod period, Number value, boolean notify); void update(RegularTimePeriod period, double value); void update(RegularTimePeriod period, Number value); void update(int index, Number value); TimeSeries addAndOrUpdate(TimeSeries series); TimeSeriesDataItem addOrUpdate(RegularTimePeriod period,
                                          double value); TimeSeriesDataItem addOrUpdate(RegularTimePeriod period,
            Number value); TimeSeriesDataItem addOrUpdate(TimeSeriesDataItem item); void removeAgedItems(boolean notify); void removeAgedItems(long latest, boolean notify); void clear(); void delete(RegularTimePeriod period); void delete(int start, int end); void delete(int start, int end, boolean notify); @Override Object clone(); TimeSeries createCopy(int start, int end); TimeSeries createCopy(RegularTimePeriod start, RegularTimePeriod end); @Override boolean equals(Object obj); @Override int hashCode();  }### Answer:
@Test public void testAdd() { TimeSeries s1 = new TimeSeries("S1"); s1.setMaximumItemCount(2); s1.add(new Year(2010), 1.1); s1.add(new Year(2011), 2.2); s1.add(new Year(2012), 3.3); assertEquals(2, s1.getItemCount()); assertEquals(2.2, s1.getMinY(), EPSILON); assertEquals(3.3, s1.getMaxY(), EPSILON); }