text: //
  //  RACConcatViewController.h
  //  RACDemo
  //
  //  Created by iMac on 2017/12/9.
  //  Copyright © 2017年 iMac. All rights reserved.
  //
  
  #import "BaseViewController.h"
  
  @interface RACConcatViewController : BaseViewController
  
  @end
  