text: //
  //  NSObject+Extension.h
  //  Category
  //
  //  Created by Ma Hao on 14/03/2018.
  //  Copyright © 2017年 zeroyear. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSObject (Extension)
  
  //@property (nonatomic, strong) id objc1;
  //@property (nonatomic, strong) id objc2;
  
  - (NSString *)showField;
  
  @end
  