in src/main/java/com/googlesource/gerrit/plugins/hooks/TopicEdited.java [34:47]
public void onTopicEdited(TopicEditedListener.Event event) {
HookArgs args = hookFactory.createArgs();
ChangeInfo c = event.getChange();
args.add("--change", c.id);
args.add("--change-owner", c.owner);
args.add("--project", c.project);
args.add("--branch", c.branch);
args.add("--changer", event.getWho());
args.add("--old-topic", event.getOldTopic());
args.add("--new-topic", event.getChange().topic);
hook.execute(c.project, args);
}