public function mergeParams($method, Array $params = [])
    {
        $result = parent::mergeParams($method, $params);

        foreach ($this->map as $oldKey => $newKey)
        {
            if (array_key_exists($oldKey, $result[$method])) {
                $result[$method][$newKey] = $result[$method][$oldKey];
                $result[$method][$oldKey] = null;
                unset($result[$method][$oldKey]);
            }
        }

        return $result;
    }