Unnecessary difficulty in implementing additional attributes in the data layer.

[elisei]

Hello,

I need to customize the sent attributes and encountered some difficulties.

There is no reason for the functions to be private:

ViewModel/Success.php ViewModel/Product.php ViewModel/Checkout.php ViewModel/Category.php ViewModel/Cart.php

This makes extending them to implement custom attributes nearly impossible and may cause compatibility issues in the future.

Additionally, you should not indicate the column standard in the module.