Rolls back the property values of this object to its original state when it was first fetched.
- iOS 5.0+
- macOS 10.8+
- UIKit for Mac 13.0+Beta
- watchOS 2.0+
Any local changes to this object are lost when invoking this method. This method does not re-fetch property values from the event store. This method does nothing if the object was never changed.
Saving and Restoring State
var hasChanges: Bool
Returns whether this object or any of the objects it contains has uncommitted changes.
Returns whether this object has ever been saved.
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