src/Locator.php
private function createRequest(LocatorRequest $locatorRequest, $requestOption)
    {
        $xml = new DOMDocument();
        $xml->formatOutput = true;

        $trackRequest = $xml->appendChild($xml->createElement('LocatorRequest'));
        $trackRequest->setAttribute('xml:lang', 'en-US');

        $request = $trackRequest->appendChild($xml->createElement('Request'));

        $node = $xml->importNode($this->createTransactionNode(), true);
        $request->appendChild($node);

        $request->appendChild($xml->createElement('RequestAction', 'Locator'));
        $request->appendChild($xml->createElement('RequestOption', $requestOption));

        // Origin Address
        $trackRequest->appendChild($locatorRequest->getOriginAddress()->toNode($xml));

        // Translate
        $trackRequest->appendChild($locatorRequest->getTranslate()->toNode($xml));

        // Unit of measurement
        if ($locatorRequest->getUnitOfMeasurement()) {
            $trackRequest->appendChild($locatorRequest->getUnitOfMeasurement()->toNode($xml));
        }

        // LocationSearchCriteria
        if ($locatorRequest->getLocationSearchCriteria()) {
            $trackRequest->appendChild($locatorRequest->getLocationSearchCriteria()->toNode($xml));
        }

        return $xml->saveXML();
    }
private function createRequest(LocatorRequest $locatorRequest, $requestOption)
    {
        $xml = new DOMDocument();
        $xml->formatOutput = true;

        $trackRequest = $xml->appendChild($xml->createElement('LocatorRequest'));
        $trackRequest->setAttribute('xml:lang', 'en-US');

        $request = $trackRequest->appendChild($xml->createElement('Request'));

        $node = $xml->importNode($this->createTransactionNode(), true);
        $request->appendChild($node);

        $request->appendChild($xml->createElement('RequestAction', 'Locator'));
        $request->appendChild($xml->createElement('RequestOption', $requestOption));

        // Origin Address
        $trackRequest->appendChild($locatorRequest->getOriginAddress()->toNode($xml));

        // Translate
        $trackRequest->appendChild($locatorRequest->getTranslate()->toNode($xml));

        // Unit of measurement
        if ($locatorRequest->getUnitOfMeasurement()) {
            $trackRequest->appendChild($locatorRequest->getUnitOfMeasurement()->toNode($xml));
        }

        // LocationSearchCriteria
        if ($locatorRequest->getLocationSearchCriteria()) {
            $trackRequest->appendChild($locatorRequest->getLocationSearchCriteria()->toNode($xml));
        }

        return $xml->saveXML();
    }
Create the TimeInTransit request.

@param LocatorRequest $locatorRequest The request details. Refer to the UPS documentation for available structure
@param integer $requestOption

@return string