sources/coffeeshop/coffee-sls/src/main/java/solid/humank/coffeeshop/cofee/sls/orders/datacontracts/OrderItem.java [7:47]:
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public class OrderItem extends ValueObject<OrderItem> {

    String productId;
    int qty;
    BigDecimal price;

    public OrderItem() {
    }

    public OrderItem(String productId, int qty, BigDecimal prices) {
        this.productId = productId;
        this.qty = qty;
        this.price = prices;
    }

    public String getProductId() {
        return productId;
    }

    public void setProductId(String productId) {
        this.productId = productId;
    }

    public int getQty() {
        return qty;
    }

    public void setQty(int qty) {
        this.qty = qty;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

    public BigDecimal fee() {
        return this.price.multiply(BigDecimal.valueOf(qty));
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sources/coffeeshop/orders-domain/src/main/java/solid/humank/coffeeshop/order/models/OrderItem.java [12:52]:
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public class OrderItem extends ValueObject<OrderItem> {

    String productId;
    int qty;
    BigDecimal price;

    public OrderItem() {
    }

    public OrderItem(String productId, int qty, BigDecimal prices) {
        this.productId = productId;
        this.qty = qty;
        this.price = prices;
    }

    public String getProductId() {
        return productId;
    }

    public void setProductId(String productId) {
        this.productId = productId;
    }

    public int getQty() {
        return qty;
    }

    public void setQty(int qty) {
        this.qty = qty;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

    public BigDecimal fee() {
        return this.price.multiply(BigDecimal.valueOf(qty));
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