### Question:
AggregatedSeriesXValueGenerator { public int generateXValue(int seriesIndexInChart) { return (seriesIndexInChart*2)+1; }  int generateXValue(int seriesIndexInChart);  }### Answer:
@Test public void generateXValue() { assertEquals(1, aggregatedSeriesXValueGenerator.generateXValue(0)); assertEquals(3, aggregatedSeriesXValueGenerator.generateXValue(1)); assertEquals(5, aggregatedSeriesXValueGenerator.generateXValue(2)); assertEquals(7, aggregatedSeriesXValueGenerator.generateXValue(3)); }