List<@Nullable Integer> list8 = Lists.newArrayList(nullInt, nullInt);
    List<@Nullable List<@Nullable Integer>> list =
        Lists.newArrayList(list1, list2, list3, list4, list5, list6, list7, list8, null);
    List<@Nullable List<@Nullable Integer>> sorted = example.sortedCopy(list);

    // [[null, null], [null], [1, null, 2], [1, 1], [1, 2], [1], [2], [], null]
    assertThat(sorted)
        .containsExactly(

    List<@Nullable Integer> list8 = Lists.newArrayList(nullInt, nullInt);
    List<@Nullable List<@Nullable Integer>> list =
        Lists.newArrayList(list1, list2, list3, list4, list5, list6, list7, list8, null);
    List<@Nullable List<@Nullable Integer>> sorted = example.sortedCopy(list);

    // [[null, null], [null], [1, null, 2], [1, 1], [1, 2], [1], [2], [], null]
    assertThat(sorted)
        .containsExactly(

  enum InputOrder {
    SORTED {
      @Override
      void arrange(List<Integer> list) {
        sort(list);
      }
    },
    ALMOST_SORTED {
      @Override
      void arrange(List<Integer> list) {
        sort(list);
        if (list.size() > 1) {
          int i = (list.size() - 1) / 2;
          Collections.swap(list, i, i + 1);
        }
      }
    },
    RANDOM {
      @Override

  public void testOrderedPermutationSetEmpty() {
    List<Integer> list = newArrayList();
    Collection<List<Integer>> permutationSet = Collections2.orderedPermutations(list);

    assertEquals(1, permutationSet.size());
    assertThat(permutationSet).contains(list);

    Iterator<List<Integer>> permutations = permutationSet.iterator();

    assertNextPermutation(Lists.<Integer>newArrayList(), permutations);

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<FavoriteLog> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<FavoriteLog> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<FavoriteLog> list, RequestOptionCall<BulkRequestBuilder> call,

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<Role> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<Role> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<Role> list, RequestOptionCall<BulkRequestBuilder> call,

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<BadWord> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<BadWord> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<BadWord> list, RequestOptionCall<BulkRequestBuilder> call,

    }

    public int[] batchInsert(List<CrawlingInfoParam> list) {
        return batchInsert(list, null, null);
    }

    public int[] batchInsert(List<CrawlingInfoParam> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchInsert(list, call, null);
    }

    public int[] batchInsert(List<CrawlingInfoParam> list, RequestOptionCall<BulkRequestBuilder> call,

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<PathMapping> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<PathMapping> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<PathMapping> list, RequestOptionCall<BulkRequestBuilder> call,

	defer list.RUnlock()

	targets := make([]Target, 0, len(list.targets))
	for _, tgt := range list.targets {
		targets = append(targets, tgt)
	}

	return targets
}

// Empty returns true if targetList is empty.
func (list *TargetList) Empty() bool {
	list.RLock()
	defer list.RUnlock()

	return len(list.targets) == 0
}

// List - returns available target IDs.