public function destroyObjectPermanently(PhabricatorDestructionEngine $engine)
{
$awards = id(new PhabricatorBadgesAwardQuery())->setViewer($engine->getViewer())->withBadgePHIDs(array($this->getPHID()))->execute();
foreach ($awards as $award) {
$engine->destroyObjectPermanently($award);
}
$this->openTransaction();
$this->delete();
$this->saveTransaction();
}