Feature #79387

Updated by Thomas Hohn about 5 years ago

The $nonRelationTables and $nonRelationFields in TYPO3\CMS\Core\Database\ReferenceIndex contains 
 tables and columns that the ReferenceIndexer should never process. 

 In order to extend this functionality with additional tables and columns it would be nice to wrap the access 
 to these 2 arrays in the methods and provided 2 additional signals for extending this behaviour. 

 This isssue provides a way to fix the 2 related issues.