Nette\Forms\Controls\CheckboxList::__construct PHP Method

    public function __construct($label = NULL, array $items = NULL)
    {
        parent::__construct($label, $items);
        $this->control->type = 'checkbox';
        $this->container = Html::el();
        $this->separator = Html::el('br');
        $this->setOption('type', 'checkbox');
    }