protected function displayPage($tc) {
         $tcp = new Permissions($tc);
 
         if ($tc->isSystemPage() && (!$this->displaySystemPages)) {
            if ($tc->getCollectionPath() == '/members' && Config::get('ENABLE_USER_PROFILES') && $tcp->canRead()) {
               return true;
            }
 
            return false;
         }
 
         $tcv = $tc->getVersionObject();
         if ((!is_object($tcv)) || (!$tcv->isApproved() && !$this->displayUnapproved)) { 
            return false;
         }
 
         if ($this->displayUnavailablePages == false) {
 
            if (!$tcp->canRead() && ($tc->getCollectionPointerExternalLink() == null)) {
               return false;
            }
         }
 
         return true;
      }