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 |  |  | @class AFHTTPRequestOperation; | 
 |  |  | @interface WADownloadHandler : NSObject | 
 |  |  | + (void)downloadFileWithOption:(NSDictionary *)paramDic | 
 |  |  | + (NSURLSessionDownloadTask *)downloadFileWithOption:(NSDictionary *)paramDic | 
 |  |  |                  withInferface:(NSString*)requestURL | 
 |  |  |                      savedPath:(NSString*)savedPath | 
 |  |  |                         method:(NSString*)method | 
 |  |  |                downloadSuccess:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success | 
 |  |  |                downloadFailure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure | 
 |  |  |                        success:(void (^)(NSURLResponse *response, NSURL *filePath))success | 
 |  |  |                        failure:(void (^)(NSURLResponse *response, NSError *error))failure | 
 |  |  |                       progress:(void (^)(float progress))progress; | 
 |  |  | @end | 
 |  |  |  |