public function getCell($cellName)
    {
        if ($this->worksheetName == '') {
            throw new Exception('No Worksheet Specified');
        }
        $strURI = Product::$baseProductUri . '/cells/' . $this->getFileName() . '/worksheets/' . $this->worksheetName . '/cells/' . $cellName;
        $signedURI = Utils::sign($strURI);
        $responseStream = Utils::processCommand($signedURI, 'GET', 'json');
        $json = json_decode($responseStream);
        if ($json->Code == 200) {
            return $json->Cell;
        } else {
            return false;
        }

    }