}

    private static boolean isEmpty(Object value) {
      // Put types estimated to be the most frequent first.
      if (value instanceof CharSequence) {
        return ((CharSequence) value).length() == 0;
      } else if (value instanceof Collection) {
        return ((Collection<?>) value).isEmpty();
      } else if (value instanceof Map) {

        Object writeReplace() {
      return super.writeReplace();
    }
  }

  private static final class CharSequenceAsList extends AbstractList<Character> {
    private final CharSequence sequence;

    CharSequenceAsList(CharSequence sequence) {
      this.sequence = sequence;
    }

    @Override
    public Character get(int index) {
      checkElementIndex(index, size()); // for GWT

    return new Appendable() {

      @Override
      public Appendable append(CharSequence csq) throws IOException {
        a.append(csq);
        return this;
      }

      @Override
      public Appendable append(CharSequence csq, int start, int end) throws IOException {
        a.append(csq, start, end);
        return this;
      }

      @Override

    return new Appendable() {

      @Override
      public Appendable append(CharSequence csq) throws IOException {
        a.append(csq);
        return this;
      }

      @Override
      public Appendable append(CharSequence csq, int start, int end) throws IOException {
        a.append(csq, start, end);
        return this;
      }

      @Override

  private static final Appendable NASTY_APPENDABLE =
      new Appendable() {
        @Override
        public Appendable append(@Nullable CharSequence csq) throws IOException {
          throw new IOException();
        }

        @Override
        public Appendable append(@Nullable CharSequence csq, int start, int end)
            throws IOException {
          throw new IOException();
        }

        @Override

            .omitEmptyValues()
            // CharSequences
            .add("field1", "")
            .add("field2", new StringBuilder())
            // nio CharBuffer (implements CharSequence) is tested separately below
            // Collections and Maps
            .add("field11", Arrays.asList("Hello"))
            .add("field12", new ArrayList<>())
            .add("field13", new HashMap<>())

    assertEquals(-1, Iterables.indexOf(list, equalTo("jack")));
  }

  private static final Predicate<CharSequence> STARTSWITH_A =
      new Predicate<CharSequence>() {
        @Override
        public boolean apply(CharSequence input) {
          return (input.length() > 0) && (input.charAt(0) == 'a');
        }
      };

    }
    if (cp >= safeMin && cp <= safeMax) {
      return null;
    }
    return escapeUnsafe(cp);
  }

  /* Overridden for performance. */
  @Override
  protected final int nextEscapeIndex(CharSequence csq, int index, int end) {
    while (index < end) {
      char c = csq.charAt(index);
      if ((c < replacementsLength && replacements[c] != null)
          || c > safeMaxChar
          || c < safeMinChar) {

        "java.lang.Enum" to "kotlin.Enum",
        "java.lang.annotation.Annotation" to "kotlin.Annotation",
        "java.lang.Deprecated" to "kotlin.Deprecated",
        "java.lang.CharSequence" to "kotlin.CharSequence",
        "java.lang.Number" to "kotlin.Number",
        "java.lang.Throwable" to "kotlin.Throwable",
        // Collections
        "java.lang.Iterable" to "kotlin.collections.Iterable",

    @Keep
    public void checkDefaultValuesForTheseTypes(
        Gender gender,
        Integer integer,
        int i,
        String string,
        CharSequence charSequence,
        List<String> list,
        ImmutableList<Integer> immutableList,
        Map<String, Integer> map,
        ImmutableMap<String, String> immutableMap,
        Set<String> set,