9#import <Foundation/Foundation.h> 
   21@property (nonatomic,strong,readonly) NSString* _Nonnull 
userId;
 
   27@property (nonatomic,strong) NSString* _Nullable 
remark;
 
   39- (instancetype)initWithUserId:(NSString* _Nonnull)userId remark:(NSString* _Nullable)remark;