public function removeTracks(array $positions): bool
    {
        $data = $this->soap("AVTransport", "ReorderTracksInSavedQueue", [
            "UpdateID"              =>  $this->getUpdateID(),
            "TrackList"             =>  implode(",", $positions),
            "NewPositionList"       =>  "",
        ]);
        $this->updateId = $data["NewUpdateID"];

        return ($data["QueueLengthChange"] == (count($positions) * -1));
    }