AddressAdditionalDataInterface

What it does

This interface defines the contract for handling additional data that can be attached to quote addresses in Magento 2.

Developers use this when they need to extend quote address functionality with custom data beyond the standard address fields, such as delivery instructions or special handling requirements.

It provides methods to get and set extension attributes, allowing third-party modules to add custom information to address objects without modifying core tables.

Public Methods

• getExtensionAttributes()
• setExtensionAttributes()