PayPal\PayPalAPI\GetIncentiveEvaluationReq::toXMLString PHP Method

    public function toXMLString()
    {
        $str = '';
        $str .= '<ns:GetIncentiveEvaluationReq>';
        if ($this->GetIncentiveEvaluationRequest != null) {
            $str .= '<ns:GetIncentiveEvaluationRequest>';
            $str .= $this->GetIncentiveEvaluationRequest->toXMLString();
            $str .= '</ns:GetIncentiveEvaluationRequest>';
        }
        $str .= '</ns:GetIncentiveEvaluationReq>';
        return $str;
    }