org.freedesktop.NetworkManager.Settings.Connection Update

testUpdateSettingsConnection.js

var DBus = require('dbus'); 
var dbus = new DBus();
var util = require('util');
var inspect = function(object) {
  console.log("\n"+util.inspect(object, showHidden=false, depth=2, colorize=true)+"\n");
}
var bus = dbus.getBus('system');
var serviceName = 'org.freedesktop.NetworkManager';
var objectPath = '/org/freedesktop/NetworkManager/Settings/0'; // replace the number 0 this with your settings you want to test, you can use d-feet to pick up the right 
var interfaceName = 'org.freedesktop.NetworkManager.Settings.Connection';

bus.getInterface(serviceName, objectPath, interfaceName, function(err, iface) {

  var getSettings = function (callback) {
    iface.GetSettings['error'] = function (error) {
      inspect(error);
      callback(error, null);
    };
    iface.GetSettings['finish'] = function (settings) {
      inspect(settings);
      callback(null, settings);
    };
    iface.GetSettings();
  }

  var update = function (settings, callback) {
    iface.Update['error'] = function (error) {
      inspect(error);
      callback(error);
    };
    iface.Update['finish'] = function () {
      inspect("updated");
      callback(null);
    };
    iface.Update(settings);
  }

  getSettings(function (error, settings) {
    update(settings, function (error) {
      // error === "[Error: org.freedesktop.NetworkManager.Settings.Connection.MissingProperty]"
    });
  });
});