Relation
Magento\Quote\Model\Quote\Address\Relation
What it does
This class manages the persistence of related data for quote addresses in Magento 2.
When a quote address is saved, it ensures that associated items (quote address items) and shipping rates are also saved to the database.
Developers typically don't interact with this class directly as it's automatically invoked by Magento's resource model version control system during address save operations.
Public Methods
- processRelation()