def _footer(trigger, data, content):
        """
        footer of the note
        :param trigger: trigger object
        :param data: data to be used
        :param content: add the footer of the note to the content
        :return: content string
        """
        # footer of the note
        footer = EvernoteMgr.set_note_footer(data, trigger)
        content += footer
        return content
footer of the note
        :param trigger: trigger object
        :param data: data to be used
        :param content: add the footer of the note to the content
        :return: content string