text: // Class representing e-commerce coupon
  class ECommerceCoupon {
    constructor() {
      this.order_id = "";
      this.cart_id = "";
      this.coupon_id = "";
    }
  
    // Generic setter methods in accordance with builder pattern
    setOrderId(orderId) {
      this.order_id = orderId;
      return this;
    }
  
    setCartId(cartId) {
      this.cart_id = cartId;
      return this;
    }
  
    setCouponId(couponId) {
      this.coupon_id = couponId;
      return this;
    }
  }
  
  module.exports = {
    ECommerceCoupon,
  };
  