text: //
  //  UIViewController+Cloudox.h
  //  SmoothNavDemo
  //
  //  Created by zhangxiong on 2017/5/19.
  //  Copyright © 2017年 zhangxiong. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIViewController (Cloudox)
  @property (copy, nonatomic) NSString * navigationAlpha;
  @end
  