SingletonPrimitiveSpliteratorOfInt implements Spliterator.OfInt { @Override public OfInt trySplit() { return null; } SingletonPrimitiveSpliteratorOfInt(int element); @Override OfInt trySplit(); @Override boolean tryAdvance(IntConsumer consumer); @Override void forEachRemaining(IntConsumer consumer); @Override long estimateSize(); @Override int characteristics();  }
@Test void trySplit() { assertNull(instance.trySplit()); }