Deprecation: #102631 - Deprecated Controller attribute for auto configuring backend controllers 

See forge#102631

Description 

In order to unify PHP attribute naming, the former introduced \TYPO3\CMS\Backend\Attribute\Controller attribute has been deprecated and is replaced by the new \TYPO3\CMS\Backend\Attribute\AsController attribute.

Impact 

The attribute has changed from \TYPO3\CMS\Backend\Attribute\Controller to \TYPO3\CMS\Backend\Attribute\AsController and the old name has been deprecated.

Affected installations 

All installations using the deprecated attribute \TYPO3\CMS\Backend\Attribute\Controller. The extension scanner will report usages.

Migration 

Replace usages with the new attribute \TYPO3\CMS\Backend\Attribute\AsController in custom extension code.