docs: private ChannelBuffer serializeJSON(final Object obj) {
      if (query.hasQueryStringParam("jsonp")) {
        return ChannelBuffers.wrappedBuffer(
            JSON.serializeToJSONPBytes(query.getQueryStringParam("jsonp"), 
            obj));
      }
      return ChannelBuffers.wrappedBuffer(JSON.serializeToBytes(obj));
    }