@UnstableApi
    public ChainedCorsPolicyBuilder andForOriginRegex(String regex) {
        requireNonNull(regex, "regex");
        return andForOriginRegex(Pattern.compile(regex));
    }
Creates a new builder instance for a new {@link CorsPolicy}.
@return {@link ChainedCorsPolicyBuilder} to support method chaining.
core/src/main/java/com/linecorp/armeria/server/cors/CorsServiceBuilder.java