def init_bluez_adapter(self):

        dbus_bluez_named_service = None

        if self.bus is None:
            self.bus = dbus.SystemBus()

        if self.bluez_manager is None:
            dbus_obj = self.bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus', introspect=False)
            dbus_bluez_named_service = dbus_obj.GetNameOwner('org.bluez', dbus_interface='org.freedesktop.DBus')

            bluez_obj = self.bus.get_object(self.dbus_bluez_service, self.dbus_bluez_path, introspect=False)
            self.bluez_manager = dbus.Interface(bluez_obj, self.dbus_bluez_manager_interface)

        if self.bluez_default_adapter is None:

            self.bluez_default_adapter = self.bluez_manager.DefaultAdapter()

            self.bus.add_signal_receiver(handler_function=self.cb_discovery_started,
                                         signal_name='DiscoveryStarted',
                                         dbus_interface=self.dbus_bluez_adapter_interface,
                                         named_service=dbus_bluez_named_service,
                                         path=self.bluez_default_adapter)

            self.bus.add_signal_receiver(handler_function=self.cb_remote_device_found,
                                         signal_name='RemoteDeviceFound',
                                         dbus_interface=self.dbus_bluez_adapter_interface,
                                         named_service=dbus_bluez_named_service,
                                         path=self.bluez_default_adapter)

            self.bus.add_signal_receiver(handler_function=self.cb_remote_name_updated,
                                         signal_name='RemoteNameUpdated',
                                         dbus_interface=self.dbus_bluez_adapter_interface,
                                         named_service=dbus_bluez_named_service,
                                         path=self.bluez_default_adapter)

            self.bus.add_signal_receiver(handler_function=self.cb_discovery_completed,
                                         signal_name='DiscoveryCompleted',
                                         dbus_interface=self.dbus_bluez_adapter_interface,
                                         named_service=dbus_bluez_named_service,
                                         path=self.bluez_default_adapter)

        bluez_object = self.bus.get_object(self.dbus_bluez_service, self.bluez_default_adapter, introspect=False)
        self.bluez_adapter = dbus.Interface(bluez_object, self.dbus_bluez_adapter_interface)