Object temp = array[i];
    array[i] = array[j];
    array[j] = temp;
  }

  @CanIgnoreReturnValue
  static Object[] checkElementsNotNull(Object... array) {
    return checkElementsNotNull(array, array.length);
  }

  @CanIgnoreReturnValue
  static Object[] checkElementsNotNull(Object[] array, int length) {
    for (int i = 0; i < length; i++) {
      checkElementNotNull(array[i], i);
    }
    return array;

    array[i] = array[j];
    array[j] = temp;
  }

  @CanIgnoreReturnValue
  static Object[] checkElementsNotNull(Object... array) {
    checkElementsNotNull(array, array.length);
    return array;
  }

  @CanIgnoreReturnValue
  static @Nullable Object[] checkElementsNotNull(@Nullable Object[] array, int length) {
    for (int i = 0; i < length; i++) {
      checkElementNotNull(array[i], i);
    }