The key for retrieving an array of items that have changed in the query result. By default, this array contains NSMetadataItem objects, representing the query’s results; however, the query’s delegate can substitute these objects with instances of a different class.
Mac Catalyst 13.0+Beta
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.