}
public void doCommentAddedHook(final Change change, final Account account,
final PatchSet patchSet, final String comment, final Map<ApprovalCategory.Id,
ApprovalCategoryValue.Id> approvals, final ReviewDb db) throws OrmException {
final CommentAddedEvent event = new CommentAddedEvent();
event.change = eventFactory.asChangeAttribute(change);
event.author = eventFactory.asAccountAttribute(account);
event.patchSet = eventFactory.asPatchSetAttribute(patchSet);
event.comment = comment;