 
 extension NetworkOperation: NSURLSessionDelegate, NSURLSessionDataDelegate {
 
-  public func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
+  public func URLSession(session: NSURLSession,
+              dataTask: NSURLSessionDataTask,
+              didReceiveResponse response: NSURLResponse,
+                                 completionHandler: (NSURLSessionResponseDisposition) -> Void) {
     guard !cancelled else {
       finished = true
       sessionTask?.cancel()
       return
     }
-    
+
     // TODO: handle error codes etc
     completionHandler(.Allow)
   }
-  
+
   public func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData data: NSData) {
     guard !cancelled else {
       finished = true
       sessionTask?.cancel()
       return
     }
-    
+
     incomingData.appendData(data)
   }
-  
+
   public func URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError error: NSError?) {
     guard !cancelled else {
       finished = true
       sessionTask?.cancel()
       return
     }
-    
+
     if let error = error {
       print("failed to receive response: \(error)")
       finished = true

    sessionTask = localURLSession.dataTaskWithRequest(request)
    sessionTask!.resume()
  }
  
  func processData() {
    // implement in subclass
  }

      finished = true
    }
  }

}
