SDWebImageDownloaderOperation

@protocol SDWebImageDownloaderOperation <NSURLSessionTaskDelegate,
                                         NSURLSessionDataDelegate>

Describes a downloader operation. If one wants to use a custom downloader op, it needs to inherit from NSOperation and conform to this protocol For the description about these methods, see SDWebImageDownloaderOperation

Note

If your custom operation class does not use NSURLSession at all, do not implement the optional methods and session delegate methods.