text: //
  //  NSNull+NullSafe.h
  //  ManoBooGuideView
  //
  //  Created by 贾宸穆 on 2017/5/15.
  //  Copyright © 2017年 group.ManoBoo. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  
  @interface NSNull (NullSafe)
  
  @end
  