text: //
  //  UIImage+Extra.h
  //  MoviePicker
  //
  //  Created by Bert Rozenberg on 18-02-17.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIImage (Extra)
  
  - (UIImage *)grayscale;
  - (UIImage *)imageByApplyingAlpha:(CGFloat) alpha ;
  - (UIImage *)imageRotatedByDegrees:(CGFloat)degrees;
  
  @end
  