Hi, I am building a headless commerce solution using content delivery API.

Is it possible to extend the Content delivery API commerce classes adding my own attributes and fields to it, taking Cart object returned by 

https://localhost:8080/api/episerver/v3.0/me/carts/3 for example 

the attributes iam trying to add could be added to the cart , line items , shipments or basically any content type retuned by content delivery API 

this is a Json Example which I am trying to extend :

{
"id": 3,
    "name": "test2",
    "customerId": "5d437ccc-91b3-447b-8694-81b13f657dc3",
    "market": "CAN",
    "currency": "CAD",
    "lastUpdated": "2023-11-26T08:54:28.987+00:00",
    "shipments": [
        {
            "id": -1,
            "shippingAddress": {
                "firstName": "test1",
                "lastName": "test2",
                "line1": "test",
                "line2": "test",
                "city": "test",
                "countryName": "test",
                "countryCode": "test",
                "postalCode": "some postal code",
                "regionName": "test",
                "email": "testUser1@test.com",
                "phoneNumber": "01123456789",
                "name": "72a21f34-cf0d-4358-9aee-164721c559a6"
            },
            "shippingMethodId": "00000000-0000-0000-0000-000000000000",
            "lineItems": [
                {
                    "id": -4,
                    "contentId": "6d16a343-dda5-4914-bbc5-fccb38f31be0",
                    "code": "some product",
                    "placedPrice": 0.0,
                    "quantity": 1.000000000,
                    "displayName": "some product",
                    "isGift": false
                },
                {
                    "id": -5,
                    "contentId": "6d16a343-dda5-4914-bbc5-fccb38f31be0",
                    "code": "some product",
                    "placedPrice": 0.0,
                    "quantity": 1.000000000,
                    "displayName": "some product",
                    "isGift": false
                }
            ]
        },
        {
            "id": -2,
            "shippingAddress": {
                "firstName": "test1",
                "lastName": "test2",
                "line1": "another street",
                "line2": "another",
                "city": "another city",
                "countryName": "united kingdom",
                "countryCode": "UK",
                "postalCode": "another code",
                "regionName": "another region",
                "email": "testUser1@test.com",
                "phoneNumber": "01123456789",
                "name": "6f2a43a1-d7a4-4786-a9b2-cd267287c25a"
            },
            "shippingMethodId": "00000000-0000-0000-0000-000000000000",
            "lineItems": [
                {
                    "id": -3,
                    "contentId": "6d16a343-dda5-4914-bbc5-fccb38f31be0",
                    "code": "some product",
                    "placedPrice": 0.0,
                    "quantity": 1.0,
                    "displayName": "some product",
                    "isGift": false
                }
            ]
        }
    ],
    "payments": [],
    "couponCodes": []
}