text: //
  //  TopVC.h
  //  TopVC
  //
  //  Created by 张尉 on 2017/2/6.
  //  Copyright © 2017年 wayne. All rights reserved.
  //
  
  #import <Foundation/Foundation.h>
  #import <UIKit/UIKit.h>
  
  
  @interface UIViewController (TopVCSupport)
  
  @property (nonatomic) BOOL tv_ignoreSelf;   // Defaults to NO.
  
  @end
  
  
  
  @interface TopVC : NSObject
  
  @property (weak, readonly) UIViewController *top;
  
  + (instancetype)shared;
  
  @end
  