### Question:
DoubleSumAggregator extends AbstractAggregator { @Override public Point toPoint(long startEpochNanos, long epochNanos, Labels labels) { return DoublePoint.create(startEpochNanos, epochNanos, labels, current.get()); }  static AggregatorFactory getFactory(); @Override Point toPoint(long startEpochNanos, long epochNanos, Labels labels); @Override void doRecordDouble(double value);  }### Answer:
@Test void toPoint() { Aggregator aggregator = DoubleSumAggregator.getFactory().getAggregator(); assertThat(getPoint(aggregator).getValue()).isCloseTo(0, offset(1e-6)); }