### Question:
DataAggregator extends DateRangedObject { public Map<String, AggregationData<String>> getAggregatedMetricValuesData() { return aggregatedMetricValuesData; } DataAggregator(Date startTime, Date endTime, Map<String, AggregationData<String>> metricTimeSeriesData,
            Map<String, AggregationData<String>> metricValuesData, int oldAggregationPeriodInSecs,
            int newAggregationPeriodInSecs); void aggregate(); int getAggregationDiff(); String createMetricTimeSeriesKey(String oldMetricTimeSeriesRowKey); String createMetricValueKey(String oldMetricTimeSeriesKey, Date date); Map<String, AggregationData<String>> getAggregatedMetricTimeSeriesData(); Map<String, AggregationData<String>> getAggregatedMetricValuesData(); Object aggregateColumnValues(Object aggregatedValue, Object oldColumnValue); Set<AggregationData<String>> getAllMetricValues(Set<String> oldMetricValuesKeys);  }### Answer:
@Test public void testGetAggregatedMetricValuesData() { fail("Not yet implemented"); }