I've implemented Core Spotlight indexing of my app's Core Data without an index extension (CSIndexExtensionRequestHandler), and it seems to be working fine.
Would it still be useful to have one? It is described in the documentation, but I'm not sure how to implement things like
reindexAllSearchableItems for Core Data.
The Showcase App Data in Spotlight sample code associated with the WWDC21 session does not have an index extension, or override the default reindexAllSearchableItems method of NSCoreDataCoreSpotlightDelegate. Does that mean that this is no longer needed?