public function getSettings()
    {
        $resource = 'campaigns/' . $this->campaignId . '/settings.json';
       
        $response = $this->sendRequest('GET', $this->getServiceUrl($resource));

        $decodedResponseBody = $this->getDecodedBody($response->getBody());
       
        $getSettingsResponse = new Models\GetSettingsResponse($decodedResponseBody);
        return $getSettingsResponse->getSettings();
    }