Returns the managed object instances in the source store used to create the given destination instances for the passed in property mapping.
- iOS 3.0+
- macOS 10.5+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Core Data
The name of an entity mapping in use.
A array of managed objects in the destination store.
An array containing the managed object instances in the source store used to create
destination using the entity mapping named
nil, all of the source instances used to create the destination instance for this property mapping are returned.
This method throws an
NSInvalid exception if
mapping is not a valid mapping name.