Webmozart\Assert\Assert::propertyNotExists PHP Метод

    public static function propertyNotExists($classOrObject, $property, $message = '')
    {
        if (property_exists($classOrObject, $property)) {
            static::reportInvalidArgument(sprintf($message ?: 'Expected the property %s to not exist.', static::valueToString($property)));
        }
    }