             }
         catch
             {
-            // This catch block should obviate isValidJSONObject() call above, but Swift apparently
-            // doesn’t catch NSInvalidArgumentException. (radar 21913397)
+            // This catch block should obviate the isValidJSONObject() call above, but Swift apparently
+            // doesn’t catch NSInvalidArgumentException (radar 21913397).
             return FailedRequest(
                 Resource.Error(userMessage: "Cannot encode JSON", error: error as NSError))
             }


    public func request(
            method:          Alamofire.Method,
            json:            AnyObject,
            requestMutation: NSMutableURLRequest -> () = { _ in })
        -> Request
        {
        if(!NSJSONSerialization.isValidJSONObject(json))
            {
            return FailedRequest(
                Resource.Error(userMessage: "Cannot encode JSON", debugMessage: "Not a valid JSON object"))

    
    func cancel() { }
    }

public protocol NSJSONConvertible: AnyObject { }
extension NSDictionary: NSJSONConvertible { }
extension NSArray:      NSJSONConvertible { }
