public function buildTransactions(PhabricatorUser $viewer, PhabricatorApplicationTransactionInterface $object, PhabricatorMetaMTAReceivedMail $mail, $command, array $argv)
 {
     $xactions = array();
     $target = phutil_utf8_strtolower(head($argv));
     $status = null;
     $keywords = ManiphestTaskStatus::getTaskStatusKeywordsMap();
     foreach ($keywords as $key => $words) {
         foreach ($words as $word) {
             if ($word == $target) {
                 $status = $key;
                 break;
             }
         }
     }
     if ($status === null) {
         return array();
     }
     $xactions[] = $object->getApplicationTransactionTemplate()->setTransactionType(ManiphestTransaction::TYPE_STATUS)->setNewValue($status);
     return $xactions;
 }