def make_list(cls, item_converter=None, listsep=','):
        """
        Create a type converter for a list of items (many := 1..*).
        The parser accepts anything and the converter needs to fail on errors.

        :param item_converter:  Type converter for an item.
        :param listsep:  List separator to use (as string).
        :return: Type converter function object for the list.
        """
        if not item_converter:
            item_converter = parse_anything
        return cls.with_cardinality(Cardinality.many, item_converter,
                                pattern=cls.anything_pattern, listsep=listsep)