text: //
  //  FYKVOObserver.h
  //  VCStatistics
  //
  //  Created by Charlie on 2019/9/3.
  //  Copyright © 2019 www.fgyong.cn. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  NS_ASSUME_NONNULL_BEGIN
  
  @interface FYKVOObserver : NSObject
  + (instancetype)shared;
  @end
  
  NS_ASSUME_NONNULL_END
  