private function publishTransactionStory(PhabricatorProject $project, PhabricatorProjectTransaction $xaction)
 {
     $related_phids = array($project->getPHID(), $xaction->getAuthorPHID());
     id(new PhabricatorFeedStoryPublisher())->setStoryType(PhabricatorFeedStoryTypeConstants::STORY_PROJECT)->setStoryData(array('projectPHID' => $project->getPHID(), 'transactionID' => $xaction->getID(), 'type' => $xaction->getTransactionType(), 'old' => $xaction->getOldValue(), 'new' => $xaction->getNewValue()))->setStoryTime(time())->setStoryAuthorPHID($xaction->getAuthorPHID())->setRelatedPHIDs($related_phids)->publish();
 }