code: function(main_nutella, net_sub_module) {
      // Store a reference to the main module
      this.nutella = main_nutella;
      this.net = net_sub_module;
      this.file_mngr_url = 'http://' + main_nutella.mqtt_client.getHost() + ':57882';
  }
docs: Run-level binary network APIs for nutella
  @param main_nutella
  @constructor