When the method object is called with an argument list, it is unpacked again, a new argument list is constructed from the instance object and the original argument list, and the function object is called with this new argument list.

• 以一个参数列表调用方法对象时，它被重新拆封，用实例对象和原始的参数列表构造一个新的参数列表，然后函数对象调用这个新的参数列表。