public function addEmptyRow($rowId)
    {
        if ($rowId == '')
            throw new Exception('Row ID not specified');
        
        //Build URI
        $strURI = Product::$baseProductUri . '/cells/' . $this->getFileName() . '/worksheets/' . $this->worksheetName . '/cells/rows/' . $rowId;
        //Sign URI
        $signedURI = Utils::sign($strURI);
        
        //Send request and receive response
        $response = Utils::processCommand($signedURI, 'PUT', '', '');
        $json = json_decode($response);
        if ($json->Code == 200)
            return $json->Row;
        else
            return false;
    }