/**
  * @param $params
  * @param $context
  * @return mixed
  */
 protected function prepareRouteParameters(array $params, array $context)
 {
     $newParams = $params;
     foreach ($params as $key => $val) {
         $newParams[$key] = $this->evaluator->evaluate($val, $context);
     }
     return $newParams;
 }