CForumCacheManager::OnMessageAdd

public function OnMessageAdd($ID, $arFields)
{
	self::ClearTag("T", isset($arFields["FORUM_TOPIC_ID"]) ? $arFields["FORUM_TOPIC_ID"] : $arFields["TOPIC_ID"]);
	self::ClearTag("forum_msg_count".$arFields["FORUM_ID"]);
}