text: //
  //  UIToolbar+JZExtension.h
  //
  //  Created by Jazys on 3/11/16.
  //  Copyright © 2016 Jazys. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  #import "_JZ-objc-internal.h"
  
  @interface UIToolbar (JZExtension) <JZExtensionBarProtocol>
  
  - (UIView * _Nullable)jz_shadowView;
  
  @end
  