public function listBackups()
    {
        if ($this->connector->getURL() === null) {
            return 'Cannot find site URL from configuration.';
        }
        $url = $this->connector->getURL().self::VERSION.$this->connector->getSiteID().'/backups';
        $params = [];
        $response = $this->connector->connecting($url, $params, 'GET');

        if (isset($response->backups)) {
            return $response->backups;
        }

        return $response;
    }