Pimcore\Model\Site::getByRootId PHP Method

    public static function getByRootId($id)
    {
        $site = new self();
        $site->getDao()->getByRootId(intval($id));
        return $site;
    }

 /**
  * @param $element
  * @return array
  */
 protected function getTreeNodeConfig($element)
 {
     $childDocument = $element;
     $tmpDocument = array("id" => $childDocument->getId(), "text" => $childDocument->getKey(), "type" => $childDocument->getType(), "path" => $childDocument->getFullPath(), "basePath" => $childDocument->getPath(), "locked" => $childDocument->isLocked(), "lockOwner" => $childDocument->getLocked() ? true : false, "published" => $childDocument->isPublished(), "elementType" => "document", "leaf" => true, "permissions" => array("view" => $childDocument->isAllowed("view"), "remove" => $childDocument->isAllowed("delete"), "settings" => $childDocument->isAllowed("settings"), "rename" => $childDocument->isAllowed("rename"), "publish" => $childDocument->isAllowed("publish"), "unpublish" => $childDocument->isAllowed("unpublish")));
     // add icon
     $tmpDocument["iconCls"] = "pimcore_icon_" . $childDocument->getType();
     if (\Pimcore\Tool\Admin::isExtJS5()) {
         $tmpDocument["expandable"] = $childDocument->hasChilds();
     }
     // set type specific settings
     if ($childDocument->getType() == "page") {
         $tmpDocument["leaf"] = false;
         $tmpDocument["expanded"] = $childDocument->hasNoChilds();
         $tmpDocument["permissions"]["create"] = $childDocument->isAllowed("create");
         $tmpDocument["iconCls"] = "pimcore_icon_page";
         // test for a site
         try {
             $site = Site::getByRootId($childDocument->getId());
             $tmpDocument["iconCls"] = "pimcore_icon_site";
             unset($site->rootDocument);
             $tmpDocument["site"] = $site;
         } catch (\Exception $e) {
         }
     } else {
         if ($childDocument->getType() == "folder" || $childDocument->getType() == "link" || $childDocument->getType() == "hardlink") {
             $tmpDocument["leaf"] = false;
             $tmpDocument["expanded"] = $childDocument->hasNoChilds();
             if ($childDocument->hasNoChilds() && $childDocument->getType() == "folder") {
                 $tmpDocument["iconCls"] = "pimcore_icon_folder";
             }
             $tmpDocument["permissions"]["create"] = $childDocument->isAllowed("create");
         } else {
             if (method_exists($childDocument, "getTreeNodeConfig")) {
                 $tmp = $childDocument->getTreeNodeConfig();
                 $tmpDocument = array_merge($tmpDocument, $tmp);
             }
         }
     }
     $tmpDocument["qtipCfg"] = array("title" => "ID: " . $childDocument->getId(), "text" => "Type: " . $childDocument->getType());
     // PREVIEWS temporary disabled, need's to be optimized some time
     if ($childDocument instanceof Document\Page && Config::getSystemConfig()->documents->generatepreview) {
         $thumbnailFile = PIMCORE_TEMPORARY_DIRECTORY . "/document-page-previews/document-page-screenshot-" . $childDocument->getId() . ".jpg";
         // only if the thumbnail exists and isn't out of time
         if (file_exists($thumbnailFile) && filemtime($thumbnailFile) > $childDocument->getModificationDate() - 20) {
             $thumbnailPath = str_replace(PIMCORE_DOCUMENT_ROOT, "", $thumbnailFile);
             $tmpDocument["thumbnail"] = $thumbnailPath;
         }
     }
     $tmpDocument["cls"] = "";
     if (!$childDocument->isPublished()) {
         $tmpDocument["cls"] .= "pimcore_unpublished ";
     }
     if ($childDocument->isLocked()) {
         $tmpDocument["cls"] .= "pimcore_treenode_locked ";
     }
     if ($childDocument->getLocked()) {
         $tmpDocument["cls"] .= "pimcore_treenode_lockOwner ";
     }
     return $tmpDocument;
 }