CForumCacheManager::OnTopicUpdate

public function OnTopicUpdate($ID, $arFields)
{
	if (count($arFields) == 1 && array_key_exists("VIEWS", $arFields))
	{
		return;
	}
	self::ClearTag("T", $ID);
	self::ClearTag("F", $arFields["FORUM_ID"] ?? 0);
}