知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 @MarkusMeskanen: Since the object is immutable, and if you mutated it set up you could potentially not specialise it within a subclass. This was noticed by Khushal Bherwani who posted an illustration on X, I'm able to copy it, Here's my GIF of it in action: キム秘書はいったい、なぜ？ https://ddjayplotskharkhoda.design.blog/2025/09/13/aipl-lake-city-sector-103-gurgaon-ultra-luxury-living-on-dwarka-expressway/