AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(length);
    for (int i = 0; i < length; ++i) {
      assertEquals(null, refArray.get(i));
    }
    assertThrows(IndexOutOfBoundsException.class, () -> refArray.get(length));
  }

  public void testNewReferenceArray_withNegativeLength() throws Exception {
    assertThrows(NegativeArraySizeException.class, () -> Atomics.newReferenceArray(-1));
  }

    AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(length);
    for (int i = 0; i < length; ++i) {
      assertEquals(null, refArray.get(i));
    }
    assertThrows(IndexOutOfBoundsException.class, () -> refArray.get(length));
  }

  public void testNewReferenceArray_withNegativeLength() throws Exception {
    assertThrows(NegativeArraySizeException.class, () -> Atomics.newReferenceArray(-1));
  }

   *
   * @param length the length of the array
   * @return a new {@code AtomicReferenceArray} with the given length
   */
  public static <E> AtomicReferenceArray<@Nullable E> newReferenceArray(int length) {
    return new AtomicReferenceArray<>(length);
  }

  /**
   * Creates an {@code AtomicReferenceArray} instance with the same length as, and all elements
   * copied from, the given array.
   *