Get a list of :class:`language_tags.Subtag.Subtag` objects given the string macrolanguage.

        :param string macrolanguage: subtag macrolanguage.
        :return: a list of the macrolanguage :class:`language_tags.Subtag.Subtag` objects.
        :raise Exception: if the macrolanguage does not exists.

def languages(macrolanguage):
        """
        Get a list of :class:`language_tags.Subtag.Subtag` objects given the string macrolanguage.

        :param string macrolanguage: subtag macrolanguage.
        :return: a list of the macrolanguage :class:`language_tags.Subtag.Subtag` objects.
        :raise Exception: if the macrolanguage does not exists.
        """
        results = []

        macrolanguage = macrolanguage.lower()
        macrolanguage_data = data.get('macrolanguage')
        if macrolanguage not in macrolanguage_data:
            raise Exception('\'' + macrolanguage + '\' is not a macrolanguage.')
        for registry_item in registry:
            record = registry_item
            if 'Macrolanguage' in record:
                if record['Macrolanguage'] == macrolanguage:
                    results.append(Subtag(record['Subtag'], record['Type']))

        return results