@Override
    public boolean equals(Object other) {
        if (other == this) return true;
        if (other == null || other.getClass() != getClass()) return false;
        return tags.equals(((Tags)other).tags);
    }
Returns this as a space-separated string which can be used to recreate this by calling fromString().
config-provisioning/src/main/java/com/yahoo/config/provision/Tags.java