A. The new attribute will be handled by the default product converter automatically

B. Extend the product DTO to include the new attribute and Implement a new converter to convert it

C. Extend the product DTO to include the new attribute. Then, implement a new populator to fill the value. And finally, append the populator to the default product converter

D. Extend the product DTO to include the new attribute, then do a mapping from the new attribute in items.xml to the beans.xml, so that the default product converter can populate the value directly