@classmethod
def shorten_media_id(cls, media_id):
    """
        Returns the shortcode for a media id

        :param media_id: string in the format id format: AAA_BB where AAA is the pk, BB is user_id
        :return:
        """
    internal_id = int(str(media_id).split('_')[0])
    return cls.shorten_id(internal_id)
