presto-main/src/main/java/io/prestosql/execution/NodeTaskMap.java/PartitionedSplitCountTracker/PartitionedSplitCountTracker
class PartitionedSplitCountTracker:        public PartitionedSplitCountTracker(IntConsumer splitSetter)
        {
            this.splitSetter = requireNonNull(splitSetter, "splitSetter is null");
        }