code: def detach(self, auth_no_user_interaction=None):
          
          return self._assocdrive._M.Drive.PowerOff(
              '(a{sv})',
              filter_opt({
                  'auth.no_user_interaction': ('b', auth_no_user_interaction),
              })
          )
docs: Detach the device by e.g. powering down the physical port.