class V09Support {

    static @Nullable String getParentV09(String agentRollupId) {
        int index = agentRollupId.lastIndexOf("::", agentRollupId.length() - 3);
        if (index == -1) {
            return null;
        } else {
            return agentRollupId.substring(0, index).replace("::", "/");
        }
    }

}