code: func (a *AccountService) Update(ctx context.Context, sid string, data url.Values) (*Account, error) {
  	acct := new(Account)
  	// hack because this is not a resource off of the account sid
  	sidJSON := sid + ".json"
  	err := a.client.UpdateResource(ctx, accountPathPart, sidJSON, data, acct)
  	return acct, 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