Method getLayoutData

/**
 * Method to get the data to be passed to the layout for rendering.
 *
 * @return  array
 *
 * @since   4.0.0
 */
protected function getLayoutData()
{
    $data = parent::getLayoutData();
    $data['value'] = $this->default ?: '1';
    $data['checked'] = $this->checked || $this->value;
    return $data;
}