code: func (s *SecuritySchemeDefinition) Validate() error {
  	_, err := url.Parse(s.TokenURL)
  	if err != nil {
  		return fmt.Errorf("invalid token URL %#v: %s", s.TokenURL, err)
  	}
  	_, err = url.Parse(s.AuthorizationURL)
  	if err != nil {
  		return fmt.Errorf("invalid authorization URL %#v: %s", s.AuthorizationURL, err)
  	}
  	return nil
  }
docs: // Validate ensures that TokenURL and AuthorizationURL are valid URLs.