private function buildPropertyView(ManiphestTask $task, PhabricatorCustomFieldList $field_list, array $edges, $handles)
 {
     $viewer = $this->getRequest()->getUser();
     $view = id(new PHUIPropertyListView())->setUser($viewer);
     $source = $task->getOriginalEmailSource();
     if ($source) {
         $subject = '[T' . $task->getID() . '] ' . $task->getTitle();
         $view->addProperty(pht('From Email'), phutil_tag('a', array('href' => 'mailto:' . $source . '?subject=' . $subject), $source));
     }
     $edge_types = array(ManiphestTaskHasRevisionEdgeType::EDGECONST => pht('Differential Revisions'), ManiphestTaskHasMockEdgeType::EDGECONST => pht('Pholio Mocks'));
     $revisions_commits = array();
     $commit_phids = array_keys($edges[ManiphestTaskHasCommitEdgeType::EDGECONST]);
     if ($commit_phids) {
         $commit_drev = DiffusionCommitHasRevisionEdgeType::EDGECONST;
         $drev_edges = id(new PhabricatorEdgeQuery())->withSourcePHIDs($commit_phids)->withEdgeTypes(array($commit_drev))->execute();
         foreach ($commit_phids as $phid) {
             $revisions_commits[$phid] = $handles->renderHandle($phid)->setShowHovercard(true);
             $revision_phid = key($drev_edges[$phid][$commit_drev]);
             $revision_handle = $handles->getHandleIfExists($revision_phid);
             if ($revision_handle) {
                 $task_drev = ManiphestTaskHasRevisionEdgeType::EDGECONST;
                 unset($edges[$task_drev][$revision_phid]);
                 $revisions_commits[$phid] = hsprintf('%s / %s', $revision_handle->renderHovercardLink($revision_handle->getName()), $revisions_commits[$phid]);
             }
         }
     }
     foreach ($edge_types as $edge_type => $edge_name) {
         if ($edges[$edge_type]) {
             $edge_handles = $viewer->loadHandles(array_keys($edges[$edge_type]));
             $view->addProperty($edge_name, $edge_handles->renderList());
         }
     }
     if ($revisions_commits) {
         $view->addProperty(pht('Commits'), phutil_implode_html(phutil_tag('br'), $revisions_commits));
     }
     $field_list->appendFieldsToPropertyList($task, $viewer, $view);
     if ($view->hasAnyProperties()) {
         return $view;
     }
     return null;
 }