added DeviceBridge support

Device.go

@@ -62,6 +62,8 @@ func DeviceFactory(objectPath dbus.ObjectPath) (Device, error) {
 		return NewDeviceGeneric(objectPath)
 	case NmDeviceTypeIpTunnel:
 		return NewDeviceIpTunnel(objectPath)
+	case NmDeviceTypeBridge:
+		return NewDeviceBridge(objectPath)
 	case NmDeviceTypeEthernet:
 		return NewDeviceWired(objectPath)
 	case NmDeviceTypeWifi:

DeviceBridge.go

@@ -0,0 +1,73 @@
+package gonetworkmanager
+
+import (
+	"encoding/json"
+
+	"github.com/godbus/dbus/v5"
+)
+
+const (
+	DeviceBridgeInterface = DeviceInterface + ".Bridge"
+
+	// Properties
+	DeviceBridgePropertyHwAddress = DeviceBridgeInterface + ".HwAddress" // readable   s
+	DeviceBridgePropertySlaves    = DeviceBridgeInterface + ".Slaves"    // readable   as
+	DeviceBridgePropertyCarrier   = DeviceBridgeInterface + ".Carrier"   // readable   b
+)
+
+type DeviceBridge interface {
+	Device
+
+	// GetPropertyHwAddress Active hardware address of the device.
+	GetPropertyHwAddress() (string, error)
+
+	// GetPropertySlaves Array of paths of enslaved and active devices.
+	GetPropertySlaves() ([]Device, error)
+
+	// GetPropertyCarrier Indicates whether the physical carrier is found (e.g. whether a cable is plugged in or not).
+	GetPropertyCarrier() (bool, error)
+}
+
+func NewDeviceBridge(objectPath dbus.ObjectPath) (DeviceBridge, error) {
+	var d deviceBridge
+	return &d, d.init(NetworkManagerInterface, objectPath)
+}
+
+type deviceBridge struct {
+	device
+}
+
+func (d *deviceBridge) GetPropertyHwAddress() (string, error) {
+	return d.getStringProperty(DeviceBridgePropertyHwAddress)
+}
+
+func (d *deviceBridge) GetPropertySlaves() ([]Device, error) {
+	paths, err := d.getSliceObjectProperty(DeviceBridgePropertySlaves)
+	if err != nil {
+		return nil, err
+	}
+	devices := make([]Device, len(paths))
+	for i, path := range paths {
+		devices[i], err = DeviceFactory(path)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return devices, nil
+}
+
+func (d *deviceBridge) GetPropertyCarrier() (bool, error) {
+	return d.getBoolProperty(DeviceBridgePropertyCarrier)
+}
+
+func (d *deviceBridge) MarshalJSON() ([]byte, error) {
+	m, err := d.device.marshalMap()
+	if err != nil {
+		return nil, err
+	}
+
+	m["HwAddress"], _ = d.GetPropertyHwAddress()
+	m["Slaves"], _ = d.GetPropertySlaves()
+	m["Carrier"], _ = d.GetPropertyCarrier()
+	return json.Marshal(m)
+}