code: func setAuthStyle(tokenURL string, v AuthStyle) {
  	authStyleCache.Lock()
  	defer authStyleCache.Unlock()
  	if authStyleCache.m == nil {
  		authStyleCache.m = make(map[string]AuthStyle)
  	}
  	authStyleCache.m[tokenURL] = v
  }
docs: // setAuthStyle adds an entry to authStyleCache, documented above.