def max_length(obj: Union[int, list])-> int: *** Return the maximum length of any list in nested list . The *maximum length* of a nested list is defined as: 1.0, if is a number. 2. The maximum of len(obj) and the lengths of the nested lists contained in , if is a list. >>> max_length(17) 0 >>> max_length([1, 2, [1, 2], 4]) 4 >>> max_length([1, 2, [1, 2, [3], 4, 5], 4]) 5 Implement this method