Gio.DBusProxy.g_bus_type
DBusProxy.g_bus_type: Gio.BusType (Write / Construct Only)
If this property is not Gio.BusType.none, then Gio.DBusProxy.g_connection must be null and will be set to the Gio.DBusConnection obtained by calling Gio.bus_get with the value of this property.
Since 2.26