try {
final Field topics = IndexHelpTopic.class.getDeclaredField("allTopics");
topics.setAccessible(true);
final ArrayList<HelpTopic> as = new ArrayList<HelpTopic>((Collection<HelpTopic>) topics.get(aliases));
for (final String alias : activeAliases) {
final HelpTopic at = new CommandAliasHelpTopic("/" + alias, "/" + getLabel(), help);
as.add(at);
helps.add(at);
}
Collections.sort(as, HelpTopicComparator.helpTopicComparatorInstance());
topics.set(aliases, as);