code: func (a *KeyService) Update(ctx context.Context, sid string, data url.Values) (*Key, error) {
  	key := new(Key)
  	err := a.client.UpdateResource(ctx, keyPathPart, sid, data, key)
  	return key, err
  }
docs: // Update the key with the given data. Valid parameters may be found here:
  // https://www.twilio.com/docs/api/rest/keys#instance-post