code: def init_device(self):
          
          start_time = time.time()
          Device.init_device(self)
          self._pb_id = ''
          LOG.debug('init PB device %s, time taken %.6f s (total: %.2f s)',
                    self.get_name(), (time.time() - start_time),
                    (time.time() - self._start_time))
          self.set_state(DevState.STANDBY)
docs: Device constructor.