.toArray(count -> new SuggestItem.Kind[count]));
                    updateItems.add(item);
                }
                final SuggestWriterResult result =
                        suggestWriter.write(client, settings, index, updateItems.toArray(new SuggestItem[updateItems.size()]), false);
                if (result.hasFailure()) {

    class KeySetImpl extends KeySetView {
      @Override
      public @Nullable Object[] toArray() {
        return ObjectArrays.toArrayImpl(this);
      }

      @Override
      @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
      public <T extends @Nullable Object> T[] toArray(T[] a) {
        return ObjectArrays.toArrayImpl(this, a);
      }

      @Override

        public Iterator<E> iterator() {
            return parent.iterator();
        }

        @Override
        public Object[] toArray() {
            return parent.toArray();
        }

        @Override
        public <T> T[] toArray(final T[] a) {
            return parent.toArray(a);
        }

        @Override
        public boolean add(final E e) {
            return parent.add(e);
        }

    return Multisets.iteratorImpl(this);
  }

  @Override
  public @Nullable Object[] toArray() {
    return standardToArray();
  }

  @Override
  @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
  public <T extends @Nullable Object> T[] toArray(T[] array) {
    return standardToArray(array);
  }

  @Override
  public String toString() {

        if (StringUtil.isBlank(value)) {
            return StringUtil.EMPTY_STRINGS;
        }
        return split(value, ",").get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).toArray(n -> new String[n]));
    }

    protected static String[] getDefaultRolesAsArray() {
        final String value = ComponentUtil.getFessConfig().getSystemProperty("oic.default.roles");
        if (StringUtil.isBlank(value)) {

                if (fessConfig.isValidSearchLogPermissions(roles.toArray(new String[roles.size()]))) {
                    suggester.indexer().indexFromSearchWord(sb.toString(), fields.toArray(new String[fields.size()]),
                            tags.toArray(new String[tags.size()]), roles.toArray(new String[roles.size()]), 1, langs);
                    duplicateSessionMap.put(sessionId, requestedAt);

            disallowedPaths.add(path);
        }

        public String[] getAllows() {
            return allowedPaths.toArray(new String[allowedPaths.size()]);
        }

        public String[] getDisallows() {
            return disallowedPaths.toArray(new String[disallowedPaths.size()]);
        }
    }

    @Override
    public String toString() {

      char[] chars = Chars.toArray(asList(elements));
      return charactersOf(String.copyValueOf(chars));
    }
  }

  public static class CharactersOfCharSequenceGenerator extends TestCharacterListGenerator {
    @Override
    public List<Character> create(Character[] elements) {
      char[] chars = Chars.toArray(asList(elements));
      StringBuilder str = new StringBuilder();

    }
    return sumHolder[0];
  }

  @Benchmark
  int arrayListToArrayFor(int reps) {
    int sum = 0;
    for (int i = 0; i < reps; i++) {
      for (Object value : arrayList.toArray()) {
        sum += value.hashCode();
      }
    }
    return sum;
  }

  @Benchmark
  int linkedListFor(int reps) {
    int sum = 0;
    for (int i = 0; i < reps; i++) {

    assertThat(Chars.toArray(none)).isEqualTo(EMPTY);

    List<Character> one = Arrays.asList((char) 1);
    assertThat(Chars.toArray(one)).isEqualTo(ARRAY1);

    char[] array = {(char) 0, (char) 1, 'A'};

    List<Character> three = Arrays.asList((char) 0, (char) 1, 'A');
    assertThat(Chars.toArray(three)).isEqualTo(array);

    assertThat(Chars.toArray(Chars.asList(array))).isEqualTo(array);
  }