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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def natural_sort(list_to_sort: Iterable[str]) -> List[str]: """ Sorts a list of strings case insensitively as well as numerically. For example: ['a1', 'A2', 'a3', 'A11', 'a22'] To sort a list in place, don't call this method, which makes a copy. Instead, do this: my_list.sort(key=natural_keys) :param list_to_sort: the list being sorted :return: the list sorted naturally """

    return sorted(list_to_sort, key=natural_keys)