src/Tracking.php
public function track($trackingNumber, $requestOption = 'activity')
    {
        $this->trackingNumber = $trackingNumber;
        $this->requestOption = $requestOption;

        return $this->getFormattedResponse();
    }
public function track($trackingNumber, $requestOption = 'activity')
    {
        $this->trackingNumber = $trackingNumber;
        $this->requestOption = $requestOption;

        return $this->getFormattedResponse();
    }
Get package tracking information.

@param string $trackingNumber The package's tracking number.
@param string $requestOption Optional processing. For Mail Innovations the only valid options are Last Activity and All activity.

@throws Exception

@return stdClass