protected function delegate(SS_HTTPRequest $request)
 {
     if (array_search(strtolower($request->Param('Control')), self::$managed_models) === false) {
         throw new Exception('Invalid Sub Controller "' . $request->Param('Control') . '"');
     }
     if (!preg_match('/^[a-z0-9_\\.]*$/i', $request->Param('ID'))) {
         throw new Exception('Invalid ' . $request->Param('Control') . ' ID "' . $request->Param('ID') . '"');
     }
     $subcontrollerclass = 'DBP_' . ucfirst(strtolower($request->Param('Control'))) . '_Controller';
     $subcontroller = new $subcontrollerclass($request->Param('ID'));
     $response = $subcontroller->handleRequest($request);
     return $response;
 }