Relation
Magento\Quote\Model\Quote\Relation
What it does
This class manages the saving of related collections when a Quote is saved in Magento 2.
It automatically persists associated addresses, items, and payment information if they were modified, ensuring data consistency between the quote and its dependent entities.
Developers typically don't interact with this class directly as it's called automatically by Magento's version control system during quote save operations.
Public Methods
- processRelation()