Unless your WriterTo method does something different than the caller assumes it's going to do. Unless the special functions are predefined by the language (e.g

Unless your WriterTo method does something different than the caller assumes it's going to do. Unless the special functions are predefined by the language (e.g. Python's __str__, __len__, __iter__, etc.) or specified in an interface that the class explicitly inherits from, making assumptions that the language developers and I meant the same thing is careless at best and dangerous at worst.