int (long parallelismThreshold, ToIntFunction<Map.Entry<K,V>> transformer, int basis, IntBinaryOperator reducer) { if (transformer == null || reducer == null) throw new NullPointerException(); return new MapReduceEntriesToIntTask<K,V> (null, batchFor(parallelismThreshold), 0, 0, table, null, transformer, basis, reducer).invoke(); }