Ouzo\Utilities\Objects::getValueOrCallMethod PHP Method

    public static function getValueOrCallMethod($object, $field, $default, $accessPrivate = false)
    {
        $value = self::getValue($object, $field, null, $accessPrivate);
        if ($value !== null) {
            return $value;
        }
        return self::callMethod($object, $field, $default);
    }