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I'm developing a new extension in Files app.When I start a search in the top search bar, files in my extension are not showing up in the list.I tried to implement CSSearchableItem and index it to the corespotlight, but the items are only searchable in the corespotlight and not in Files app.There is no clue in NSFileproviderExtension showing how to implement the search feature in the Files App.How can I make my files searchable in Files app?Thanks