### Question:
DoubleLastValueAggregator extends AbstractAggregator { @Override @Nullable public Point toPoint(long startEpochNanos, long epochNanos, Labels labels) { @Nullable Double currentValue = current.get(); return currentValue == null ? null : DoublePoint.create(startEpochNanos, epochNanos, labels, currentValue); }  static AggregatorFactory getFactory(); @Override @Nullable Point toPoint(long startEpochNanos, long epochNanos, Labels labels); @Override void doRecordDouble(double value);  }### Answer:
@Test void toPoint() { Aggregator aggregator = DoubleLastValueAggregator.getFactory().getAggregator(); assertNullPoint(aggregator); }