 
 public extension AsyncStreamType where Next == NetworkProgress {
 
-    @warn_unused_result
     public func netMapNext() -> AsyncStream<Value, AnyObject, Error> {
         return mapNext { info -> AnyObject in
             switch info {

        }
    }

    @warn_unused_result
    public static func http200DataStream(url: NSURL, postData: NSData?, headers: URLConnectionParams.HeadersType?) -> NetworkStream {

        let params = URLConnectionParams(

        return network.dataStream(params)
    }

    public static func http200DataStream(params: URLConnectionParams) -> NetworkStream {

        let stream = dataStream(params)
