Method getAccessors

/**
 * Method to configure available option accessors.
 *
 * @return  array
 *
 * @since   4.0.0
 */
protected static function getAccessors() : array
{
    return array_merge(parent::getAccessors(), ['url', 'iframeWidth', 'iframeHeight', 'bodyHeight', 'modalWidth', 'onclose', 'title', 'footer', 'selector', 'listCheck']);
}