public function getItem()
    {
        $bib = Bib::make($this->client, $this->data->bib_data->mms_id);
        $holding = Holding::make($this->client, $bib, $this->data->holding_data->holding_id);

        return Item::make(
            $this->client,
            $bib,
            $holding,
            $this->data->item_data->pid
        )->init($this->data->item_data);
    }