code: function StreamedRequestCallbackHandler(callback, thisp) {
      var self = this;
      self.callback = callback;
      self.thisp = thisp || self;
  }
docs: The streamed request handler is for cases where the handler function elects to deal with whether req.streamed and whether res.streamed. req.streamed may indicated either a streaming request or a fragmented request and the handler must distinguish the cases.