code: func lookupProvider(ts TrackerSchedule) TrackerProvider {
  	switch ts.TrackerType {
  	case ProviderGithub:
  		return &GithubTracker{URL: ts.URL, Query: ts.Query}
  	case ProviderJira:
  		return &JiraTracker{URL: ts.URL, Query: ts.Query}
  	}
  	return nil
  }
docs: // lookupProvider provides the respective tracker based on the type