code: func (e Event) Check() error {
  	if len(e.Title) == 0 {
  		return fmt.Errorf("statsd.Event title is required")
  	}
  	if len(e.Text) == 0 {
  		return fmt.Errorf("statsd.Event text is required")
  	}
  	return nil
  }
docs: // Check verifies that an event is valid.