Breaking: #107783 - Registration of Metadata Extractors via registerExtractionService 

Description 

The method TYPO3\CMS\Core\Resource\Index\ExtractorRegistry::registerExtractionService() has been removed in favor of automatic registration via the \TYPO3\CMS\Core\Resource\Index\ExtractorInterface .

Registration of Metadata extractors now happens automatically when the required interface \TYPO3\CMS\Core\Resource\Index\ExtractorInterface is implemented by a class. No further registration is necessary.

Impact 

Any call to ExtractorRegistry::registerExtractionService() is now a no-op and has no effect in TYPO3 v14.0+. Metadata extractors are registered automatically via the interface.

Affected installations 

TYPO3 installations with custom extensions that register Metadata extractor classes via the mentioned method in ext_localconf.php. The extension scanner will report usages.

Migration 

The method is removed without deprecation in order to allow extensions to work with TYPO3 v13 (using the registration method) and v14+ (using automatic interface-based registration) without any further deprecations.

Remove the manual registration from ext_localconf.php:

- $extractorRegistry = GeneralUtility::makeInstance(ExtractorRegistry::class);
- $extractorRegistry->registerExtractionService(MyExtractor::class);

Since custom extractors already implement the required interface \TYPO3\CMS\Core\Resource\Index\ExtractorInterface , no further change is required inside the extractor class itself.