presto-main/src/main/java/io/prestosql/operator/aggregation/minmaxby/MinMaxByNStateFactory.java/MinMaxByNStateFactory/setTypedKeyValueHeap
class MinMaxByNStateFactory:        @Override
        public void setTypedKeyValueHeap(TypedKeyValueHeap typedKeyValueHeap)
        {
            this.typedKeyValueHeap = typedKeyValueHeap;
        }