code: func (c *Client) UpdateService(i *UpdateServiceInput) (*Service, error) {
  	if i.ID == "" {
  		return nil, ErrMissingID
  	}
  
  	path := fmt.Sprintf("/service/%s", i.ID)
  	resp, err := c.PutForm(path, i, nil)
  	if err != nil {
  		return nil, err
  	}
  
  	var s *Service
  	if err := decodeJSON(&s, resp.Body); err != nil {
  		return nil, err
  	}
  	return s, nil
  }
docs: // UpdateService updates the service with the given input.