coredata/ObjC/_PersonWrapper.h
#import <Foundation/Foundation.h>
@class Person;
@interface _PersonWrapper : NSObject
@property(nonatomic, strong) NSDate *birthday;
@property(nonatomic, strong) NSString *name;
@property(readonly, strong, nonatomic) Person *entity;
- (instancetype)initWithEntity:(Person *)entity;
- (void)updateEntity:(Person *)entity;
@end