如何从REST API为多个或嵌套的json数据定义数组类型

[
    {
        "id": 1,
        "name": "Alice",
        "orders": [
            {
                "orderId": 101,
                "products": [
                    { "productId": 1, "productName": "Product A" },
                    { "productId": 2, "productName": "Product B" }
                ]
            },
            {
                "orderId": 102,
                "products": [
                    { "productId": 3, "productName": "Product C" }
                ]
            }
        ]
    },
    {
        "id": 2,
        "name": "Bob",
        "orders": [
            {
                "orderId": 103,
                "products": [
                    { "productId": 4, "productName": "Product D" }
                ]
            }
        ]
    }
]

class Product {
    constructor(productId, productName) {
        this.productId = productId;
        this.productName = productName;
    }
}

class Order {
    constructor(orderId, products) {
        this.orderId = orderId;
        this.products = products; // Product[]
    }
}

class User {
    constructor(id, name, orders) {
        this.id = id;
        this.name = name;
        this.orders = orders; // Order[]
    }
}

// 假设我们从API获取的数据存储在变量 `apiResponse` 中
const users = apiResponse.map(userJson => {
    const orders = userJson.orders.map(orderJson => {
        const products = orderJson.products.map(productJson => {
            return new Product(productJson.productId, productJson.productName);
        });
        return new Order(orderJson.orderId, products);
    });
    return new User(userJson.id, userJson.name, orders);
});