如何使用SuiteTalk API获取所有促销？

I am using suitetalk toolkit for accessing Netsuite. Already checked the samplecode,it has the code to get a promotion details by its internal Id(using getCustomer.php). I want to get All promotions from netsuite, to achieve this what could be the best way and how can i do that?

Already tried some hacks like through savedsearch, searchresults by giving promotions as the string. None of them led me to success.

Can anyone help me to find the way? i cant see any docs or online page to work with suitetalk operations for my requirement.

Code I have tried to get a Promotion

$service = new NetSuiteService();
$request = new GetRequest();
$request->baseRef = new RecordRef();
$request->baseRef->internalId = "3";//3183723
$request->baseRef->type = "promotionCode";//customer
$getResponse = $service->get($request);
print_r($getResponse);

if (!$getResponse->readResponse->status->isSuccess) {
    echo "GET ERROR";
} else {
    $promotion = $getResponse->readResponse->record;
    echo "Name :".$promotion->name."
";
    echo "Start Date :".$promotion->startDate."
";
    echo "End Date :".$promotion->endDate."
";
    echo "Description :".$promotion->description."
";
    echo "Rate :".$promotion->rate."
";
}

Use a search call, not a get call. Searches will return all rows paginated.