public ImageServiceMiddleware(RequestDelegate next, IImageService imageService, IEncodedStringImageTransformationRequestConverter imageRequestConverter)
 {
     this.next                  = next;
     this.imageService          = imageService;
     this.imageRequestConverter = imageRequestConverter;
 }
 public TransformedImageCache(ICachedTransformBlobStorage cacheStorage, IEncodedStringImageTransformationRequestConverter requestConverter)
 {
     this.cacheStorage     = cacheStorage;
     this.requestConverter = requestConverter;
 }