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