@interface RLMPropertyChange : NSObject
Information about a specific property which changed in an
RLMObject change notification.
The name of the property which changed.
@property (readonly, strong, nonatomic) NSString *_Nonnull name;
The value of the property before the change occurred. This will always be
nilif the change happened on the same thread as the notification and for
For object properties this will give the object which was previously linked to, but that object will have its new values and not the values it had before the changes. This means that
previousValuemay be a deleted object, and you will need to check
invalidatedbefore accessing any of its properties.
@property (readonly, strong, nonatomic, nullable) id previousValue;