code: func flushOAuthTokenGrantsLogCron(c *router.Context) {
  	// FlushGrantsLog logs errors inside. We also do not retry on errors. It's
  	// fine to wait and flush on the next iteration.
  	serviceaccounts.FlushGrantsLog(c.Context)
  	c.Writer.WriteHeader(http.StatusOK)
  }
docs: // flushOAuthTokenGrantsLogCron is handler for /internal/cron/bqlog/oauth-token-grants-flush.