public function move(Wall $dest, $user)
{
CommentsIndex::changeParent(0, $dest->getId(), $this->mThreadId);
$wallHistory = new WallHistory($this->mCityId);
$wallHistory->moveThread($this->mThreadId, $dest->getId());
$main = $this->getThreadMainMsg();
$main->load();
// this is use to build a history in contribiution page
$main->markAsMove($user);
$this->invalidateCache();
}
