return emptySet();
  }

  protected Collection<Method> suppressForEnumSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForSynchronizedNavigableSet() {
    return emptySet();
  }

  protected Collection<Method> suppressForTreeSetNatural() {
    return emptySet();
  }

  protected Collection<Method> suppressForTreeSetWithComparator() {