Get Adminhtml quote session using Magento 2.

Magento Native supports multiple Sessions type for frontend and backend (adminhtml) system.

You can get admin Html(backend) quote session using Magento 2 by Magento\Backend\Model\Session\Quote class.

Quote Class is responsible for getting Back end quote in Magento 2 admin panel order processes.

You can get Backend quote using the above function and fetch quote related data.

You can fetch current quote items, quote id, extension attributes related data.