text: //
  //  UIAppearance+Swift.h
  //  Newman Knights
  //
  //  Created by Nick Frey on 12/22/15.
  //  Copyright © 2015 Nick Frey. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIBarButtonItem (Swift)
  
  + (instancetype)swift_appearanceWhenContainedIn:(NSArray<Class<UIAppearanceContainer>> *)containerClasses;
  
  @end
  