code: func NewSourceFromDB(DBConfigFile string) (Source, error) {
  	// Load DB from cofiguration file
  	db, err := dbconf.DBFromConfig(DBConfigFile)
  
  	if err != nil {
  		return nil, err
  	}
  	// Create accesor
  	accessor := sql.NewAccessor(db)
  	src := NewDBSource(accessor)
  
  	return src, nil
  }
docs: // NewSourceFromDB reads the given database configuration file
  // and creates a database data source for use with the OCSP responder