public function getMobileTraffic($parameters = [], $parseResult = true)
    {
        $this->setParams([
            'metrics'    => 'ga:sessions,ga:pageviews,ga:sessionDuration',
            'dimensions' => 'ga:mobileDeviceInfo,ga:source',
            'segment'    => 'gaid::-14',
        ]);

        return $this->execute($parameters, $parseResult);
    }