/** Get the date of the last modification of posts in the current topic. */
public DateTime getLastModificationPostDate() {
DateTime newTopicModificationDate = getFirstPost().getLastTouchedDate();
for (Post post : posts) {
if (post.getLastTouchedDate().isAfter(newTopicModificationDate.toInstant())) {
newTopicModificationDate = post.getLastTouchedDate();
}
}
return newTopicModificationDate;
}
