@Override
    public Predicate<InetAddress> preferredIpV4Addresses() {
        return new Predicate<InetAddress>() {
            @Override
            public boolean test(InetAddress ignored) {
                return true;
            }

            @Override
            public String toString() {
                return "*";
            }
        };
    }
Implementation of {@link FlagsProvider} which provides default values to {@link Flags}.
core/src/main/java/com/linecorp/armeria/common/DefaultFlagsProvider.java