* expression:
 *
 * <pre>{@code
 * Splitter.on(',').split(" foo,,,  bar ,")
 * }</pre>
 *
 * ... yields the substrings {@code [" foo", "", "", " bar ", ""]}. If this is not the desired
 * behavior, use configuration methods to obtain a <i>new</i> splitter instance with modified
 * behavior:
 *
 * <pre>{@code
 * private static final Splitter MY_SPLITTER = Splitter.on(',')
 *     .trimResults()
 *     .omitEmptyStrings();

 * expression:
 *
 * <pre>{@code
 * Splitter.on(',').split(" foo,,,  bar ,")
 * }</pre>
 *
 * ... yields the substrings {@code [" foo", "", "", " bar ", ""]}. If this is not the desired
 * behavior, use configuration methods to obtain a <i>new</i> splitter instance with modified
 * behavior:
 *
 * <pre>{@code
 * private static final Splitter MY_SPLITTER = Splitter.on(',')
 *     .trimResults()
 *     .omitEmptyStrings();

  private static final Splitter COMMA_SPLITTER = Splitter.on(',');

  public void testSplitNullString() {
    try {
      COMMA_SPLITTER.split(null);
      fail();
    } catch (NullPointerException expected) {
    }
  }

  public void testCharacterSimpleSplit() {
    String simple = "a,b,c";
    Iterable<String> letters = COMMA_SPLITTER.split(simple);

  private static final Splitter COMMA_SPLITTER = Splitter.on(',');

  public void testSplitNullString() {
    try {
      COMMA_SPLITTER.split(null);
      fail();
    } catch (NullPointerException expected) {
    }
  }

  public void testCharacterSimpleSplit() {
    String simple = "a,b,c";
    Iterable<String> letters = COMMA_SPLITTER.split(simple);

       */
      if (!field.isSynthetic() && field.getType() == String.class) {
        builder.add(field);
      }
    }
    return builder.build();
  }

  private static final Splitter SPLITTER = Splitter.on('_');
  private static final Joiner JOINER = Joiner.on('-');

  private static String upperToHttpHeaderName(
      String constantName,
      ImmutableBiMap<String, String> specialCases,

    return com.google.common.base.Optional.of(value);
  }

  @Generates
  Joiner generateJoiner() {
    return Joiner.on(generateString());
  }

  @Generates
  Splitter generateSplitter() {
    return Splitter.on(generateString());
  }

  @Generates
  <T> Equivalence<T> generateEquivalence() {
    return new Equivalence<T>() {
      @Override
      protected boolean doEquivalent(T a, T b) {

    return com.google.common.base.Optional.of(value);
  }

  @Generates
  Joiner generateJoiner() {
    return Joiner.on(generateString());
  }

  @Generates
  Splitter generateSplitter() {
    return Splitter.on(generateString());
  }

  @Generates
  <T> Equivalence<T> generateEquivalence() {
    return new Equivalence<T>() {
      @Override
      protected boolean doEquivalent(T a, T b) {

          .put(UUID.class, UUID.randomUUID())
          // common.base
          .put(CharMatcher.class, CharMatcher.none())
          .put(Joiner.class, Joiner.on(','))
          .put(Splitter.class, Splitter.on(','))
          .put(com.google.common.base.Optional.class, com.google.common.base.Optional.absent())
          .put(Predicate.class, Predicates.alwaysTrue())
          .put(Equivalence.class, Equivalence.equals())

          .put(UUID.class, UUID.randomUUID())
          // common.base
          .put(CharMatcher.class, CharMatcher.none())
          .put(Joiner.class, Joiner.on(','))
          .put(Splitter.class, Splitter.on(','))
          .put(com.google.common.base.Optional.class, com.google.common.base.Optional.absent())
          .put(Predicate.class, Predicates.alwaysTrue())
          .put(Equivalence.class, Equivalence.equals())

@Immutable
@ElementTypesAreNonnullByDefault
public final class InternetDomainName {

  private static final CharMatcher DOTS_MATCHER = CharMatcher.anyOf(".\u3002\uFF0E\uFF61");
  private static final Splitter DOT_SPLITTER = Splitter.on('.');
  private static final Joiner DOT_JOINER = Joiner.on('.');

  /**
   * Value of {@link #publicSuffixIndex()} or {@link #registrySuffixIndex()} which indicates that no
   * relevant suffix was found.