if (searchEngineClient.copyDocIndex(fromIndex, toIndex, replaceAliases) && replaceAliases
                        && !searchEngineClient.updateAlias(toIndex)) {
                    logger.warn("Failed to update aliases for {} and {}", fromIndex, toIndex);
                }
            }, e -> logger.warn("Failed to reindex from {} to {}", fromIndex, toIndex, e)));
            return true;

  }

  @Override
  public int size() {
    return 1;
  }

  @Override
  public ImmutableList<E> subList(int fromIndex, int toIndex) {
    Preconditions.checkPositionIndexes(fromIndex, toIndex, 1);
    return (fromIndex == toIndex) ? ImmutableList.<E>of() : this;
  }

  @Override
  public String toString() {
    return '[' + element.toString() + ']';
  }

  @Override

   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(char[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**

   * exclusive. This is equivalent to {@code
   * Collections.reverse(Floats.asList(array).subList(fromIndex, toIndex))}, but is likely to be
   * more efficient.
   *
   * @throws IndexOutOfBoundsException if {@code fromIndex < 0}, {@code toIndex > array.length}, or
   *     {@code toIndex > fromIndex}
   * @since 23.1
   */

   * exclusive. This is equivalent to {@code
   * Collections.reverse(Doubles.asList(array).subList(fromIndex, toIndex))}, but is likely to be
   * more efficient.
   *
   * @throws IndexOutOfBoundsException if {@code fromIndex < 0}, {@code toIndex > array.length}, or
   *     {@code toIndex > fromIndex}
   * @since 23.1
   */

	// not trigger alert column
	AssertEqual(t, true, DB.Migrator().HasConstraint(&UniqueTest{}, "uni_unique_tests_name"))
	AssertEqual(t, false, DB.Migrator().HasIndex(&UniqueTest{}, "name"))
	AssertEqual(t, false, DB.Migrator().HasIndex(&UniqueTest{}, "name_1"))
	AssertEqual(t, false, DB.Migrator().HasIndex(&UniqueTest{}, "name_2"))

	ct, err = findColumnType(&UniqueTest{}, "name")
	if err != nil {
		t.Fatalf("findColumnType err:%v", err)
	}

    }

    @Override
    public ImmutableList<Character> subList(int fromIndex, int toIndex) {
      checkPositionIndexes(fromIndex, toIndex, size()); // for GWT
      return charactersOf(string.substring(fromIndex, toIndex));
    }

    @Override
    boolean isPartialView() {
      return false;
    }

    @Override

   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(char[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**

   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(short[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**

   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(short[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**