public ImageController(IExternalImageServiceClient client,
                        IMemoryCache cache,
                        IProcessingChannel channel)
 {
     _client  = client;
     _cache   = cache;
     _channel = channel;
 }
 public UploadImageService(IExternalImageServiceClient client, IProcessingChannel channel)
 {
     _client  = client;
     _channel = channel;
 }
 public ImageController(IProcessingChannel processingChannel, ICacheHelper cacheHelper, IExternalImageServiceClient client)
 {
     _processingChannel = processingChannel;
     _cacheHelper       = cacheHelper;
     _client            = client;
 }