@Override
  public double getDoubleResult() {
    return _value;
  }
@Test
  void testDefaultValue() {
    AggregationResultHolder resultHolder = new DoubleAggregationResultHolder(DEFAULT_VALUE);

    double actual = resultHolder.getDoubleResult();
    Assert.assertEquals(actual, DEFAULT_VALUE,
        "Default Value mismatch: Actual: " + actual + " Expected: " + DEFAULT_VALUE + " Random seed: " + RANDOM_SEED);
  }