code: func (p *Provider) Init(constraints types.Constraints) error {
  	err := p.BaseProvider.Init(constraints)
  	if err != nil {
  		return err
  	}
  
  	if p.APIVersion == "" {
  		p.APIVersion = sf.DefaultAPIVersion
  	}
  
  	tlsConfig, err := p.TLS.CreateTLSConfig()
  	if err != nil {
  		return err
  	}
  
  	p.sfClient, err = sf.NewClient(http.DefaultClient, p.ClusterManagementURL, p.APIVersion, tlsConfig)
  	if err != nil {
  		return err
  	}
  
  	if p.RefreshSeconds <= 0 {
  		p.RefreshSeconds = flaeg.Duration(10 * time.Second)
  	}
  
  	if p.AppInsightsClientName != "" && p.AppInsightsKey != "" {
  		if p.AppInsightsBatchSize == 0 {
  			p.AppInsightsBatchSize = 10
  		}
  		if p.AppInsightsInterval == 0 {
  			p.AppInsightsInterval = flaeg.Duration(5 * time.Second)
  		}
  		createAppInsightsHook(p.AppInsightsClientName, p.AppInsightsKey, p.AppInsightsBatchSize, p.AppInsightsInterval)
  	}
  	return nil
  }
docs: // Init the provider