text: //
  //  NSObject+WGKBlocks.h
  //  PSFoundation
  //
  //  Created by Peter Steinberger on 24.10.10.
  //  Copyright 2010 Peter Steinberger. All rights reserved.
  //
  #import <UIKit/UIKit.h>
  #import <Foundation/Foundation.h>
  
  @interface NSObject (WGKBlocks)
  + (id)wgk_performBlock:(void (^)(void))block afterDelay:(NSTimeInterval)delay;
  + (id)wgk_performBlock:(void (^)(id arg))block withObject:(id)anObject afterDelay:(NSTimeInterval)delay;
  - (id)wgk_performBlock:(void (^)(void))block afterDelay:(NSTimeInterval)delay;
  - (id)wgk_performBlock:(void (^)(id arg))block withObject:(id)anObject afterDelay:(NSTimeInterval)delay;
  + (void)wgk_cancelBlock:(id)block;
  + (void)wgk_cancelPreviousPerformBlock:(id)aWrappingBlockHandle __attribute__ ((deprecated));
  
  @end
  