Get the region :class:`language_tags.Subtag.Subtag` of the tag.

        :return: region :class:`language_tags.Subtag.Subtag` that is part of the tag.
            The return can be None.

def region(self):
        """
        Get the region :class:`language_tags.Subtag.Subtag` of the tag.

        :return: region :class:`language_tags.Subtag.Subtag` that is part of the tag.
            The return can be None.
        """

        region_item = [subtag for subtag in self.subtags if subtag.type == 'region']

        return region_item[0] if len(region_item) > 0 else None