presto-main/src/main/java/io/prestosql/operator/aggregation/state/DigestAndPercentileArrayStateFactory.java/DigestAndPercentileArrayStateFactory/setPercentiles
class DigestAndPercentileArrayStateFactory:        @Override
        public void setPercentiles(List<Double> percentiles)
        {
            this.percentiles = requireNonNull(percentiles, "percentiles is null");
        }