public void testNullPointerExceptions() {
    new NullPointerTester()
        .setDefault(Enum.class, SomeEnum.A)
        .setDefault(Class.class, SomeEnum.class) // for newEnumSet
        .testAllPublicStaticMethods(Sets.class);
  }

  public void testNewSetFromMap() {
    Set<Integer> set = Sets.newSetFromMap(new HashMap<Integer, Boolean>());
    set.addAll(SOME_COLLECTION);

    assertFalse(changed);
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(Iterators.class);
  }

  @GwtIncompatible // Only used by @GwtIncompatible code
  private abstract static class EmptyIteratorTester extends IteratorTester<Integer> {
    protected EmptyIteratorTester() {

    assertFalse(changed);
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(Iterators.class);
  }

  @GwtIncompatible // Only used by @GwtIncompatible code
  private abstract static class EmptyIteratorTester extends IteratorTester<Integer> {
    protected EmptyIteratorTester() {

    return new TypeToken<T[]>() {}.where(new TypeParameter<T>() {}, componentType);
  }

  public <T> void testNulls() {
    new NullPointerTester().testAllPublicStaticMethods(TypeToken.class);
    new NullPointerTester()
        .setDefault(TypeParameter.class, new TypeParameter<T>() {})
        .testAllPublicInstanceMethods(TypeToken.of(String.class));
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
  public void testNullPointerExceptions() {
    new NullPointerTester().testAllPublicStaticMethods(Maps.class);
  }

  private static final Map<Integer, Integer> EMPTY = Collections.emptyMap();
  private static final Map<Integer, Integer> SINGLETON = Collections.singletonMap(1, 2);

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  @AndroidIncompatible // see ImmutableTableTest.testNullPointerInstance
  public void testNullPointerExceptions() {
    new NullPointerTester().testAllPublicStaticMethods(Maps.class);
  }

  private static final Map<Integer, Integer> EMPTY = Collections.emptyMap();
  private static final Map<Integer, Integer> SINGLETON = Collections.singletonMap(1, 2);

    return new TypeToken<T[]>() {}.where(new TypeParameter<T>() {}, componentType);
  }

  public <T> void testNulls() {
    new NullPointerTester().testAllPublicStaticMethods(TypeToken.class);
    new NullPointerTester()
        .setDefault(TypeParameter.class, new TypeParameter<T>() {})
        .testAllPublicInstanceMethods(TypeToken.of(String.class));
  }