* @since 16.0
   */
  public static <T extends Enum<T>> Converter<String, T> stringConverter(Class<T> enumClass) {
    return new StringConverter<>(enumClass);
  }

  private static final class StringConverter<T extends Enum<T>> extends Converter<String, T>
      implements Serializable {

    private final Class<T> enumClass;

    StringConverter(Class<T> enumClass) {
      this.enumClass = checkNotNull(enumClass);
    }

  public Converter<String, String> converterTo(CaseFormat targetFormat) {
    return new StringConverter(this, targetFormat);
  }

  private static final class StringConverter extends Converter<String, String>
      implements Serializable {

    private final CaseFormat sourceFormat;
    private final CaseFormat targetFormat;

    StringConverter(CaseFormat sourceFormat, CaseFormat targetFormat) {

   * @since 16.0
   */
  public static <T extends Enum<T>> Converter<String, T> stringConverter(Class<T> enumClass) {
    return new StringConverter<>(enumClass);
  }

  private static final class StringConverter<T extends Enum<T>> extends Converter<String, T>
      implements Serializable {

    private final Class<T> enumClass;

    StringConverter(Class<T> enumClass) {
      this.enumClass = checkNotNull(enumClass);
    }

  public Converter<String, String> converterTo(CaseFormat targetFormat) {
    return new StringConverter(this, targetFormat);
  }

  private static final class StringConverter extends Converter<String, String>
      implements Serializable {

    private final CaseFormat sourceFormat;
    private final CaseFormat targetFormat;

    StringConverter(CaseFormat sourceFormat, CaseFormat targetFormat) {

  @J2ktIncompatible
  public void testStringConverter_toString() {
    assertThat(Enums.stringConverter(TestEnum.class).toString())
        .isEqualTo("Enums.stringConverter(com.google.common.base.EnumsTest$TestEnum.class)");
  }

  public void testStringConverter_serialization() {
    SerializableTester.reserializeAndAssert(Enums.stringConverter(TestEnum.class));
  }

  @J2ktIncompatible
  public void testNullPointerExceptions() {

    Converter<Long, String> reverseConverter = Longs.stringConverter().reverse();
    SerializableTester.reserializeAndAssert(reverseConverter);
  }

  @GwtIncompatible // J2CL generics problem
  public void testSerialization_andThen() {
    Converter<String, Long> converterA = Longs.stringConverter();
    Converter<Long, String> reverseConverter = Longs.stringConverter().reverse();

  @J2ktIncompatible
  public void testStringConverter_toString() {
    assertThat(Enums.stringConverter(TestEnum.class).toString())
        .isEqualTo("Enums.stringConverter(com.google.common.base.EnumsTest$TestEnum.class)");
  }

  public void testStringConverter_serialization() {
    SerializableTester.reserializeAndAssert(Enums.stringConverter(TestEnum.class));
  }

  @J2ktIncompatible
  public void testNullPointerExceptions() {