protected function shouldApplyHeraldRules(
  PhabricatorLiskDAO $object,
  array $xactions) {

  if ($this->getIsNewObject()) {
    return true;
  }

  foreach ($xactions as $xaction) {
    switch ($xaction->getTransactionType()) {
      case DifferentialTransaction::TYPE_UPDATE:
        if (!$this->getIsCloseByCommit()) {
          return true;
        }
        break;
      case DifferentialTransaction::TYPE_ACTION:
        switch ($xaction->getNewValue()) {
          case DifferentialAction::ACTION_CLAIM:
            // When users commandeer revisions, we may need to trigger
            // signatures or author-based rules.
            return true;
        }
        break;
    }
  }

  return parent::shouldApplyHeraldRules($object, $xactions);
}