presto-main/src/main/java/io/prestosql/operator/aggregation/state/LongDecimalWithOverflowAndLongStateFactory.java/GroupedLongDecimalWithOverflowAndLongState/getEstimatedSize
class GroupedLongDecimalWithOverflowAndLongState:        @Override
        public long getEstimatedSize()
        {
            return INSTANCE_SIZE + unscaledDecimals.sizeOf() + overflows.sizeOf() + numberOfElements * SingleLongDecimalWithOverflowAndLongState.SIZE;
        }