* compareTo.
   */
  private static class CountsHashCodeAndEquals implements Comparable<CountsHashCodeAndEquals> {
    private final String delegateString;
    private final Runnable onHashCode;
    private final Runnable onEquals;
    private final Runnable onCompareTo;

    CountsHashCodeAndEquals(
        String delegateString, Runnable onHashCode, Runnable onEquals, Runnable onCompareTo) {