presto-main/src/main/java/io/prestosql/operator/aggregation/state/LongDecimalWithOverflowStateFactory.java/SingleLongDecimalWithOverflowState/setLongDecimal
class SingleLongDecimalWithOverflowState:        @Override
        public void setLongDecimal(Slice unscaledDecimal)
        {
            this.unscaledDecimal = unscaledDecimal;
        }