code: def stop_action(self):
          
          self._stop_action, value = self.get_attr_string(self._stop_action, 'stop_action')
          return value
docs: Reading returns the current stop action. Writing sets the stop action.
          The value determines the motors behavior when `command` is set to `stop`.
          Also, it determines the motors behavior when a run command completes. See
          `stop_actions` for a list of possible values.