Languages.

        Returns a set of languages in lower-case.

        :return:
            Returns a set of languages in lower-case (strings).

def languages(self):
        """Languages.

        Returns a set of languages in lower-case.

        :return:
            Returns a set of languages in lower-case (strings).
        """
        result = set()
        languages = self._safe_get_element('ItemAttributes.Languages')
        if languages is not None:
            for language in languages.iterchildren():
                text = self._safe_get_element_text('Name', language)
                if text:
                    result.add(text.lower())
        return result