code: func (c *Client) IntervalActions() (actions []contract.IntervalAction, err error) {
  	conn := c.Pool.Get()
  	defer conn.Close()
  
  	objects, err := getObjectsByRange(conn, models.IntervalActionKey, 0, -1)
  	if err != nil {
  		return []contract.IntervalAction{}, err
  	}
  
  	actions = make([]contract.IntervalAction, len(objects))
  	for i, object := range objects {
  		err = json.Unmarshal(object, &actions[i])
  		if err != nil {
  			return []contract.IntervalAction{}, err
  		}
  	}
  
  	return actions, nil
  }
docs: // Get all schedule interval action(s)