SingletonSpliterator implements Spliterator<T> { @Override public Spliterator<T> trySplit() { return null; } SingletonSpliterator(Object item, int additionalCharacteristics); @Override Spliterator<T> trySplit(); @SuppressWarnings("unchecked") @Override void forEachRemaining(Consumer<? super T> action); @Override boolean tryAdvance(Consumer<? super T> action); @Override long estimateSize(); @Override int characteristics(); @Override Comparator<? super T> getComparator();  }
@Test void testTrySplit() { printTestName(); assertNull(instance.trySplit()); }