列出所有产品变体？这是如何实现的？求解答

Question

public function get_unviewed_notify() {

    set_time_limit(0);

    $this->load->add_package_path(APPPATH.'third_party/wish/');

    $this->load->library('noti_fetch_unviewed');

    $this->load->model('wish_api_model');

    $account_row = $this->wish_api_model->fetch_account_info_by_account(137);

    if($account_row == NULL) {

    echo "Account $account not found\n";

    return;

    }

    $key = $account_row->token;

    $account_id = $account_row->id;

    if($key == NULL) {

    echo "Account $account not found\n";

    return;

    }

    $response = $this->noti_fetch_unviewed

    ->set_key($key)

    ->set_start(0)

    ->set_limit(50)

    ->call();

    echo '<pre>';

    var_dump($response);

    }

}