docs: def translations_objects(self, lang):
          """
          Return the complete list of translation objects of a Translatable
          instance
  
          @type lang: string
          @param lang: a string with the name of the language
  
          @rtype: list of Translation
          @return: Returns a list of translations objects
          """
          return Translation.objects.filter(
              object_id=self.id,
              content_type=ContentType.objects.get_for_model(self),
              lang=lang
          )