class Voucher {
    constructor(voucher_id, variant_id, count, price, note, picture, client, key = null) {
        this.voucher_id = voucher_id;
        this.variant_id = variant_id;
        this.count = count;
        this.price = price;
        this.note = note;
        this.picture = picture;
        this.client = client;
        this.key = key;
    }

    sayHello(){
        console.log("Test!");
    }

}