public function addProductNumbers($productNumbers)
    {
        $parameters = $this->request->getParameters();
        $parameters->add('productNumber', $productNumbers);
        $this->upToDate = false;
    }
public function addProductNumbers($productNumbers)
    {
        $parameters = $this->request->getParameters();
        $parameters->add('productNumber', $productNumbers);
        $this->upToDate = false;
    }
public function addProductNumbers ( $ productNumbers ) { $ parameters = $ this -> request -> getParameters ( ) ; $ parameters -> add ( 'productNumber' , $ productNumbers ) ; $ this -> upToDate = false ; }
Add one or multiple product numbser to get campaigns for, in addition to any
numbers previously set.

@param string|string[] $productNumbers One or more product numbers.
Add one or multiple product numbser to get campaigns for in addition to any numbers previously set .