The ID of the zone containing the records to search.
- iOS 8.0+
- macOS 10.10+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 3.0+
When set, the value of this property limits the scope of the search to the records in the specified zone. If no zone is specified, the search takes place on all zones.
When you initialize the operation object using the
init(cursor:) method, the value of this property is set to
nil and any changes you make to the property are ignored. When the operation object is executed, the cursor object provides the zone information from the initial search that generated the cursor.