code: func (sp *StandardProvider) Check() error {
  	if sp.Paths.KeyFile == "" && sp.Paths.CertFile == "" {
  		return nil
  	}
  
  	if sp.Paths.KeyFile == "" {
  		return ErrMissingKeyPath
  	}
  
  	if sp.Paths.CertFile == "" {
  		return ErrMissingCertPath
  	}
  
  	return nil
  }
docs: // Check ensures that the paths are valid for the provider.