@AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite(IteratorsTest.class.getSimpleName());
    suite.addTest(testsForRemoveAllAndRetainAll());
    suite.addTestSuite(IteratorsTest.class);
    return suite;
  }

  @SuppressWarnings("DoNotCall")
  public void testEmptyIterator() {
    Iterator<String> iterator = emptyIterator();
    assertFalse(iterator.hasNext());