@CheckForNull
  public final V getOrDefault(@CheckForNull Object key, @CheckForNull V defaultValue) {
    /*
     * Even though it's weird to pass a defaultValue that is null, some callers do so. Those who
     * pass a literal "null" should probably just use `get`, but I would expect other callers to
     * pass an expression that *might* be null. This could happen with:
     *

    assertEquals(String[].class, array.getClass());
    assertThat(array).hasLength(2);
    assertNull(array[0]);
  }

  @J2ktIncompatible // Array<String>::class literal not available in Kotlin KMP
  @GwtIncompatible // ObjectArrays.newArray(Class, int)
  public void testNewArray_fromClass_OfArray() {
    String[][] array = ObjectArrays.newArray(String[].class, 1);

    assertEquals(String[].class, array.getClass());
    assertThat(array).hasLength(2);
    assertNull(array[0]);
  }

  @J2ktIncompatible // Array<String>::class literal not available in Kotlin KMP
  @GwtIncompatible // ObjectArrays.newArray(Class, int)
  public void testNewArray_fromClass_OfArray() {
    String[][] array = ObjectArrays.newArray(String[].class, 1);

  @CheckForNull
  public final V getOrDefault(@CheckForNull Object key, @CheckForNull V defaultValue) {
    /*
     * Even though it's weird to pass a defaultValue that is null, some callers do so. Those who
     * pass a literal "null" should probably just use `get`, but I would expect other callers to
     * pass an expression that *might* be null. This could happen with:
     *

   * Splitter.on(", ").split("foo, bar,baz")} returns an iterable containing {@code ["foo",
   * "bar,baz"]}.
   *
   * @param separator the literal, nonempty string to recognize as a separator
   * @return a splitter, with default settings, that recognizes that separator
   */
  public static Splitter on(final String separator) {