public CorsServiceBuilder maxAge(Duration maxAge) {
        requireNonNull(maxAge, "maxAge");
        return maxAge(TimeUnit.MILLISECONDS.toSeconds(maxAge.toMillis()));
    }
Sets the CORS {@code "Access-Control-Max-Age"} response header and enables the
caching of the preflight response for the specified time. During this time no preflight
request will be made.

@param maxAge the maximum time that the preflight response may be cached. Rounded to seconds.
@return {@link CorsServiceBuilder} to support method chaining.
core/src/main/java/com/linecorp/armeria/server/cors/CorsServiceBuilder.java