helper.addValue(2);
    assertEquals(expected2, helper.toString());
  }

  @GwtIncompatible // Class names are obfuscated in GWT
  public void testToString_addValue() {
    String toTest =
        MoreObjects.toStringHelper(new TestClass())
            .add("field1", 1)
            .addValue("value1")
            .add("field2", "value2")
            .addValue(2)

    helper.addValue(2);
    assertEquals(expected2, helper.toString());
  }

  @GwtIncompatible // Class names are obfuscated in GWT
  public void testToString_addValue() {
    String toTest =
        MoreObjects.toStringHelper(new TestClass())
            .add("field1", 1)
            .addValue("value1")
            .add("field2", "value2")
            .addValue(2)

    public ToStringHelper addValue(@CheckForNull Object value) {
      return addHolder(value);
    }

    /**
     * Adds an unnamed value to the formatted output.
     *
     * <p>It is strongly encouraged to use {@link #add(String, boolean)} instead and give value a
     * readable name.
     *
     * @since 18.0 (since 11.0 as {@code Objects.ToStringHelper.addValue()}).
     */
    @CanIgnoreReturnValue

    public ToStringHelper addValue(@CheckForNull Object value) {
      return addHolder(value);
    }

    /**
     * Adds an unnamed value to the formatted output.
     *
     * <p>It is strongly encouraged to use {@link #add(String, boolean)} instead and give value a
     * readable name.
     *
     * @since 18.0 (since 11.0 as {@code Objects.ToStringHelper.addValue()}).
     */
    @CanIgnoreReturnValue

   * Returns a string representation for this CacheBuilderSpec instance. The form of this
   * representation is not guaranteed.
   */
  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this).addValue(toParsableString()).toString();
  }

  @Override
  public int hashCode() {
    return Objects.hashCode(
        initialCapacity,
        maximumSize,
        maximumWeight,
        concurrencyLevel,

   * Returns a string representation for this CacheBuilderSpec instance. The form of this
   * representation is not guaranteed.
   */
  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this).addValue(toParsableString()).toString();
  }

  @Override
  public int hashCode() {
    return Objects.hashCode(
        initialCapacity,
        maximumSize,
        maximumWeight,
        concurrencyLevel,

    }
    if (valueStrength != null) {
      s.add("valueStrength", Ascii.toLowerCase(valueStrength.toString()));
    }
    if (keyEquivalence != null) {
      s.addValue("keyEquivalence");
    }
    return s.toString();
  }

      s.add("valueStrength", Ascii.toLowerCase(valueStrength.toString()));
    }
    if (keyEquivalence != null) {
      s.addValue("keyEquivalence");
    }
    if (valueEquivalence != null) {
      s.addValue("valueEquivalence");
    }
    if (removalListener != null) {
      s.addValue("removalListener");
    }
    return s.toString();
  }

      // the event had no subscribers and was not itself a DeadEvent
      post(new DeadEvent(this, event));
    }
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this).addValue(identifier).toString();
  }

  /** Simple logging handler for subscriber exceptions. */
  static final class LoggingHandler implements SubscriberExceptionHandler {

        parentContent = parentContent.replace(
                "<packaging>pom</packaging>",
                "<packaging>pom</packaging><properties><addedProperty>addedValue</addedProperty></properties>");
        Files.write(parent.toPath(), parentContent.getBytes(StandardCharsets.UTF_8));
        // re-build pom with modified parent