public enum ObjectChange
Information about the changes made to an object which is passed to `Object’s notification blocks.
If an error occurs, notification blocks are called one time with a
.errorresult and an
NSErrorcontaining details about the error. Currently the only errors which can occur are when opening the Realm on a background worker thread to calculate the change set. The callback will never be called again after .error is delivered.
case error(_: NSError)