public ClientCacheControlBuilder maxStaleSeconds(long maxStaleSeconds) {
        this.maxStaleSeconds = validateSeconds(maxStaleSeconds, "maxStaleSeconds");
        return this;
    }
Enables the {@code "max-stale"} directive.

@param maxStaleSeconds the value in seconds.
core/src/main/java/com/linecorp/armeria/common/ClientCacheControlBuilder.java