public function staticAction($key)
    {
        if ($key && is_array($this->staticUriMocks) && array_key_exists($key, $this->staticUriMocks)) {
            $config = $this->staticUriMocks[$key];
            $this->response->setHeader('Content-Type', $config['contentType']);
            return file_get_contents($config['path']);
        }

        throw new TargetNotFoundException();
    }