text: //
  //  NSObject+WtWindow.h
  //  WtCore
  //
  //  Created by fanwt on 06/02/2018.
  //
  
  #import <UIKit/UIKit.h>
  
  
  @interface NSObject (WtWindow)
  - (UIWindow *)wtTopWindow;
  - (UIViewController *)wtTopViewController;
  @end
  