joiner.appendTo(sb1FromIterator, parts.iterator());
    assertEquals("x" + expected, sb1FromIterator.toString());

    // The use of iterator() works around J2KT b/381065164.
    Integer[] partsArray = newArrayList(parts.iterator()).toArray(new Integer[0]);
    assertEquals(expected, joiner.join(partsArray));

    StringBuilder sb2 = new StringBuilder().append('x');

    checkUnbounded(queue);
    assertSame(SOME_COMPARATOR, queue.comparator());
  }

  // We use the rawtypeToWildcard "cast" to make the test work with J2KT in other tests. Leaving one
  // test without that cast to verify that using the raw Comparable works outside J2KT.
  @J2ktIncompatible // J2KT's translation of raw Comparable is not a supertype of Int translation
  public void testCreation_expectedSize() {

    // collection like ConcurrentLinkedQueue, so that e.g. concurrent
    // iteration would work, but that would not be GWT-compatible.
    // We are not "just" inheriting from ArrayList here as this doesn't work for J2kt.
    return new AbstractList<T>() {
      final ArrayList<T> data = new ArrayList<>();

      @Override
      public int size() {
        return max(0, data.size() + delta);
      }

      @Override

        .addEqualityGroup("Phil")
        .testEquals();
  }

  @GwtIncompatible // TODO(b/148207871): Restore once Eclipse compiler no longer flakes for this.
  @J2ktIncompatible // TODO(b/148207871): Likewise, or once J2KT uses javac instead of Eclipse.
  public void testLegacyComparable() {
    Range<LegacyComparable> unused = Range.closed(LegacyComparable.X, LegacyComparable.Y);
  }

   * TODO: cpovirk - Is this an issue anywhere anymore? It looks to have been fixed for Java 8
   * (https://bugs.openjdk.org/browse/JDK-7121314) and before Lollipop
   * (https://r.android.com/47508). We *would* need to worry for J2KT, whose own concurrency support
   * is evolving (b/381065164, b/458160722), but this class is @J2ktIncompatible.
   *
   * 2. The superclass toArray() method declares the more general return type `@Nullable Object[]`,

    joiner.appendTo(sb1FromIterator, parts.iterator());
    assertEquals("x" + expected, sb1FromIterator.toString());

    // The use of iterator() works around J2KT b/381065164.
    Integer[] partsArray = newArrayList(parts.iterator()).toArray(new Integer[0]);
    assertEquals(expected, joiner.join(partsArray));

    StringBuilder sb2 = new StringBuilder().append('x');

            .add("field40", new Object[0])
            .toString();
    assertEquals("TestClass{field11=[Hello], field26=Optional.of(World), field31=[!!!]}", toTest);
  }

  @J2ktIncompatible // J2kt CharBuffer does not implement CharSequence so not recognized as empty
  @GwtIncompatible // CharBuffer not available
  public void testToStringOmitEmptyValues_charBuffer() {
    String toTest =

    // Changes after are not
    list.set(0, 5);

    assertEquals(ImmutableList.of(3, 4), first);
  }

  @J2ktIncompatible // Arrays.asList(...).subList() doesn't implement RandomAccess in J2KT.
  @GwtIncompatible // Arrays.asList(...).subList doesn't implement RandomAccess in GWT
  public void testPartitionRandomAccessInput() {
    Iterable<Integer> source = asList(1, 2, 3);

  /**
   * The number of bytes required to represent a primitive {@code char} value.
   *
   * <p>Prefer {@link Character#BYTES} instead.
   */
  // We don't use Character.BYTES here because it's not available under J2KT.
  public static final int BYTES = Character.SIZE / Byte.SIZE;

  /**
   * Returns a hash code for {@code value}; obsolete alternative to {@link
   * Character#hashCode(char)}.
   *

    // collection like ConcurrentLinkedQueue, so that e.g. concurrent
    // iteration would work, but that would not be GWT-compatible.
    // We are not "just" inheriting from ArrayList here as this doesn't work for J2kt.
    return new AbstractList<T>() {
      final ArrayList<T> data = new ArrayList<>();

      @Override
      public int size() {
        return max(0, data.size() + delta);
      }

      @Override