public function reduceProxyResponse()
 {
     if ($this->transactionView) {
         $view = $this->transactionView;
     } else {
         if ($this->getTransactions()) {
             $view = head($this->getTransactions())->getApplicationTransactionViewObject();
         } else {
             $view = new PhabricatorApplicationTransactionView();
         }
     }
     $view->setUser($this->getViewer())->setTransactions($this->getTransactions())->setIsPreview($this->isPreview);
     if ($this->getAnchorOffset()) {
         $view->setAnchorOffset($this->getAnchorOffset());
     }
     if ($this->isPreview) {
         $xactions = mpull($view->buildEvents(), 'render');
     } else {
         $xactions = mpull($view->buildEvents(), 'render', 'getTransactionPHID');
     }
     $content = array('xactions' => $xactions, 'spacer' => PHUITimelineView::renderSpacer());
     return $this->getProxy()->setContent($content);
 }